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- They are planting trees on the hill these days. 这几天他们正在山上种树。
- I know.? They are planting millions of trees. 我知道。北京正在大量地植树。
- B: They are planting mil-lions of trees all round the city. 北京各地都在植树,栽种的树木有数百万棵。
- B???????? They are planting millions of trees all round the city. 在北京各地都在植树，栽种的树木有数百万棵。
- B They are planting millions of trees all round the city. 在北京各地都在植树，栽种的树木有数百万棵。
- They were planting trees last Sunday. 树不一定植完。
- I bet they are making a pile out of the deal. 我肯定他们这笔生意一定赚大钱。
- I'll stick it out here until they are back. 我要在这儿顶下去直到他们回来。
- They do whatever they are doing -- all out. 他们做任何他们所做的事--都是全力以赴。
- They are after you, you might as well clear out. 他们正追你，你还是离开的好。
- Fruit juices ferment if they are kept a long time. 果汁若是放置很久，就会发酵。
- They are thrashing out a new economic policy. 他们正在研究制定一个新的经济政策。
- They are trying out the new method. 他们正在试验那种新方法。
- They are determined to act out their ideal. 她们决心把自己的理想变成行动。
- Trees should be planted in cities because they are manufacturers of oxygen as well as absorbers of carbon dioxide. 城市里应该植树，因为它们能制造氧气，吸收二氧化碳。
- They are moving out into the sticks. 他们将从市区搬到乡间去。
- They are planning a new nuclear power plant. 他们正在策划一座新的核电厂。
- Last night, they were cleaned out by robbers. 昨晚他们被强盗洗劫一空。
- People get rude and whiny when they are exhausted. 人们在精疲力竭的时候会变得粗野，爱发牢骚。
- In the Northwest, they are being planted by hedgerow on seedling roots, clonal and dwarfing stocks. 在西北部地区用灌木树篱把它接在实生砧、无性砧及矮化砧上。
