🗣️ 情景例句
If you don't know a person's last name, use 'ma'am' or 'sir'.
如果你不知道一人的姓， 你应称呼他为 'ma'am' 或 'sir' 。
I don't think your plan will work.
我想你的计划行不通。
Both planes were going to take off on July 25th, but Latham failed to get up early enough,
两天飞机都打算在7月25日起飞，但莱瑟姆那天起床晚了。