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
I'd love a cup of coffee.
我是想来杯咖啡。
Wherever.
无论放哪里。
But here we come up against the most difficult of all obstacles to contact with people on other planets ----the astronomical distances which separate us.
然而，在和外星人联系中我们遇到的最大困难是分隔我们的天文距离。