🧩 词语组成解析
alder
['ɔ:ldə]
n. 桤木;
tree
[tri]
n. 树;木料;树状图;宗谱;
vt. 把…赶上树;使处于困境;把鞋型插入（鞋内）;
🗣️ 情景例句
Not at all.
不客气。
What will you do to help protect our environment from being seriously polluted?
你将为帮助保护我们的环境免遭到污染做些什么呢？
You'd better go to bed earlier tonight, if you can.
如果可能，你今晚最好早点儿睡觉。