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
Western countries have evry strict visa requirements.
在西方国家有严格的签证要求。
People greet one another with Happy New Year.
人们相互祝福“新年好”。
You were very angry!
你火气真大！