Maintenance definition
[计] 维护定义, 维护确定, 维护规定
🧩 词语组成解析
🗣️ 情景例句
Sunrises. Stretch it out. Flat back.
双手捧日。尽量伸展。平背拉回。
I often study in the morning.
我常常在早上读书。
It must have been a gas that could burn but that would not explode, a gas that did not smell strong, and a gas that did not kill people.
它一定是一种能够燃烧而不能爆炸的气体，一种味道不很强的而且不使人致死的气体。