Optional argument
[计] 任选变元
🧩 词语组成解析
🗣️ 情景例句
and just enjoy this beautiful spring day.
尽情享受这美好的春天。
He doesn't like the idea of going to bed early.
他不喜欢早睡觉。
You can buy whatever you need if you have enough money.
钱多了，你需要什么就可以买什么。