Ed50
[医] 半数有效量
🗣️ 情景例句
The company went broke.
这家公司破产了。
Can I stop over on the way?
我在中途可以停吗？
It is ten o'clock.Mrs.Sawyer usually stays at home in the morning, but this morning, she is going to the shops.
现在是10点钟。上午，索耶夫人通常是呆在家里的，但今天上午，她正去商店买东西。