Treelines
(treeline 的复数) n. 树木生长线（按海拔标示的树木生长上限）
🗣️ 情景例句
What's your trade-in policy?
这里对汽车是怎样做折价处理的？
We know not what is good until we have lost it.
有的时候不爱惜，失了以后空叹息。
Several weeks after that, I will plant them in rows in the field.
再过几个星期，我还要把它们一行行地栽到菜地里。