tree:n. 树；木料；树状物vt. 把...赶上树vi. 爬上树；逃上树This big tree is the bird's home.这棵大树是鸟儿的家。

They cut the tree with an axe.他们用一把斧子伐树。Let's rest under yonder tree.我们在那边的树下休息吧。train:n. 火车；行列；长队；裙裾v. 培养；训练；瞄准I'm training for next week's competition.我正在为下周的比赛训练。I'll go home by train this weekend.这个周末我将乘火车回家。The two ways to get around the UK are by trainand by bus.在英国旅行的两种方式是坐火车和坐公共汽车。He was training us to be soldiers.他正把我们训练成士兵。