🧩 词语组成解析
citrus
[['sitrəs]]
n. 柑橘属果树
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
This has been a hard course for me.
这门课对于我来说很难。
A common danger causes common action.
同仇敌忾。
There should always be exceptions to the rule.
凡事总有例外。