Keyfield
[计] 键区, 关键字段
🗣️ 情景例句
International travel involves a lot of waiting around in airports.
经常在机场等候是环球旅行的一部分。
The packing must be strong enough to withstand rough handing.
包装必须很坚固，能承受野蛮装卸。
It is hard for us to realize nowadays how difficult it was for the pioneers.
我们今天很难想像昔日的登山先驱们是多么艰苦。