Si op. sit.
[医] 必要时
🧩 词语组成解析
[计] 国际单位制, 串行接口, 移入\\n[医] 硅(14号元素,旧名矽)
🗣️ 情景例句
The climate here is always hot, summer and winter alike.
这里的气候总是那么热，夏季与冬季都一样。
Knowledge is long, life is short.
吾生有涯，而知无涯。
It's a pleasure. What time is it by your watch, please?
不客气。请问，你的表几点了？