Efficiency analysis
[计] 有效性分析
🧩 词语组成解析
🗣️ 情景例句
You are twenty-one, a grown-up young lady old enough to make up your own mind.
你已经21岁了，已经到了可以自己做主的年龄了。
It is never too old to learn.
为学不怕年高。
Most games cost about that much.
大部分游戏差不多都是这个价钱。