Partial performance
[经] (合同的)部份履行
🧩 词语组成解析
🗣️ 情景例句
No, …is not in right now. May I take a message?
不， ……现在不在这儿。 我能帮你捎个口信吗？
I worked in the garden last night.
我昨晚在花园工作。
and we have only to turn to that extraordinary discovery of echo-location in bats to see a case in which the voice plays a strictly utilitarian role.
我们只要看一看蝙蝠回声定位这一极不寻常的发现，就可以探究一下声音在什么情况下有绝对的实用价值。