Indespensability
n. 不可少, 必需
🗣️ 情景例句
I think the building just needs a good cleaning.
我想那座建筑只需要好好地打扫一下。
Are you in touch with him now?
你现在和他有联系吗？
The children shouted to the driver, but he did not hear them.
孩子们对着司机喊叫着，但是他没有听见。