(1)against prep. ,Υ#[E'genst] prep. We are destroying our best fighters against pollution. 
(2)agree v. ͬ#[E'gri:] v. Everyone in our team agrees to the point.
(3)air conditioners n. յ#['eE(r) kEn'dIS'EnE(r)] n. Trees are natural air conditioners.
(4)alive adj. ŵ : living adj.  : dead adj. #[E'laIV] adj. Trees make oxygen to keep animals alive.
(5)azateas n. ž : cuckoo n. ž#[e'zeIlIE] n. The best-known flowers in Shenzhen are azateas.
(6)be interested in ...Ȥ#[bi: 'Intristid in] adj. Doctor Ray is very interested in trees.
(7)beat v.  : hit v. #[bi:t] v. Don't beat the drum. It's very noisy.
(8)bite v. ҧ : gnaw v. ҧ#[baIt] v. Themouse bite a hole in the bag.
(9)breath v. #[bri:D] v. I enjoy breathing fresh air.
(10)burn v. (ʹ)ջ#[bE:n] v. We cut down and burn a lot of trees.
(11)chemical n. ѧ chemistry n. ѧ#['kemIkl] n. Trees can produce a chemical to make their leaves taste bad to protect themselves.
(12)collect v. ռ,Ѽ gather v. ,ۼ#[kE'lekt] v. Judy is collecting some facts for the project.
(13)communicate with#[kE'mju:nIkeIt wID] v. Trees are communicating with one another but we don't know how.
(14)communicate v. , transfer v. ,ת#[kE'mju:nIkeIt] v. Trees are communicating with one another but we don't know how.
(15)container n. #[kEn'teInE(r)] n. Please put the water into the container.
(16)cool v. ȴ cooling adj. ȴ()#[ku:1] v. The rain has cooled the air.
(17)cut down v. #[kVt daun] v. We cut down and burn a lot of trees every year.
(18)destroy v. ݻ,ƻ damage v. ˺,ƻ#[dI'strOI] v. We are destroying our best fighters against pollution. 
(19)dig v. #[dIg] v. The workers are digging holes for planting trees.
(20)doctor n. ʿ,ҽ#['dAktE(r)] n. Mr Smith is a Doctor of Law.
(21)end n. ĩ bottom n. ײ,ͷ,ĩ#[end] n. The rubber on the end of your pencil comes from trees.
(22)fight v. #[faIt] v. Trees help fight the air pollution. 
(23)fit v. ʺ suit v. ʺ#[fIt] v. These shoes don't fit my feet.
(24)fresh adj. ʵ,޾,ˮ,µ#[freS] adj. The only food they had were two cans of preserved turnips, no fresh water.
(25)give out v. ,ų give off v. #[gIv Eut] v. Trees can give out oxygen for us to breathe.
(26)harmful adj. к#['hA:mfl] adj. Smoking is harmful to health.
(27)heel n. #[hi:1] n. There is a hole in the heel of one of your socks.
(28)in danger Σ#[In danZE] adj. Trees are in danger.
(29)in order of ...˳#[In O:DE Ov] adv. Please arrange the ideas in order of importance.
(30)insect n. #['Insekt] n. When insects attack a tree, it can warn its neighbours.
(31)interview v. ɷ,̸#[IntEvju:] v. We are now going to interview the headmaster.
(32)join v. , connect v. ,#[dZOIn] v. Some trees can join their roots together underground.
(33)leisure n. ,#['leSE(r)] n. There is a new leisure area in the centre of the city.
(34)natural adj. Ȼ,Ȼ#['nQtSrEl] adj. Trees are natural air conditioners.
(35)oxygen n. #['AksIdSEn] n. Trees take harmful gas from the air, and release oxygen into the air.
(36)pass v.  transfer v. ,ת#[pA:s] v. Trees can pass information to one another.
(37)plastic adj. ϵ#['plAstIk] adj. We should stop using plastic bags for shopping.
(38)point n. ۵,#[pOInt] n. His point of view is clear.
(39)pollution n. Ⱦ pollute v. Ⱦ#[pE'lu:SEn] n. Pollution means the process of making things dirty and unhealthy.
(40)poster n. #['pEustE(r)] n. They put up posters all round the town to advertise the show.
(41)probably adv. , maybe adv. ,#['prObEblI] adv. John will probably lose his job if he keeps coming late to work
(42)process n. , course n. ,#['prEuses] n. Pollution means the process of making things dirty and unhealthy.
(43)produce v. #[prE'dju:s] v. Trees can produce a chemical to make their leaves taste bad to protect themselves.
(44)project n. о research n. ,о#['prOdSekt] n. She's doing a project on pollution. 
(45)reduce v.  increase v. #[ri'dju:s] v. Trees reduce sound pollution in cities.
(46)underground adv. ڵ#[;VndE'graund] adv. Some trees can join their roots together underground.
(47)unhealthy adj., healthy adj. ,׳#[Vn'helTI] adj. Living conditions in the city's slums are unhealthy.
(48)warn v. ,#[wO:n] v. When insects attack a tree, it can warn its neighbours.
