Variable-mass system
[化] 变质量系
🧩 词语组成解析
mass
[mæs]
n. 大量，大多;块，堆，团;[物理学]质量;弥撒曲;
vt.& vi. （使）集中，聚集;
adj. 群众的;大规模的;整个的;集中的;
vi. 聚集起来;
vt. 使集合;
🗣️ 情景例句
Can you boil some potatoes for me? I'm making potato salad.
你能帮我煮些土豆吗？ 我今晚要做沙拉酱。
He's the youngest in the family.
他是一家中最小的。
When he learnt that he would be sent abroad, he returned to the farm and his father hid him until the end of the war.
当他了解自己将被派遣出国时，他逃回农场，父亲把他藏了起来，直到战争结束。