Packplane
n. (主)货舱可更换的飞机
🗣️ 情景例句
My doctor says I could live to be 100.
我的医生说我能活到100岁。
I invited him to come back, but he wouldn't.
我请他回来，但是他不肯。
Some of the bigger firms are engaged in researches which are of such general and fundamental nature that it is a positive advantage to them not to keep them secret.
某些大公司进行的研究属于一般和基础性的研究。因此不保密对他们才有利。