Sub-question
子问题
🧩 词语组成解析
n. 补充人员, 部下, 潜水艇, 胶层, 订户, 傻子\\na. 附属的, 次级的\\nvt. 替代, 转包\\nvi. 替代\\n[计] 子程式, 用户, 代替, 减法器
🗣️ 情景例句
Well, I have an appointment now, I'll have to go.
嗯，我还有一个约会，我得走了。
I didn't know whether to send the letter airmail or not.
我不知道是否送航空邮件。
It did not take the firefighters long to put out the fire, and they at once started to look for causes of the fire.
消防队员没花多时间就把大火扑灭了，他们马上开始调查火灾发生的原因。