A ball bearing
滚珠轴承
🧩 词语组成解析
ball
[bɔl]
n. 球;棒球（投手投出的）坏球;拇指球;舞会;
vt. 做成球状，使成团块;（指男性）和（女性）交媾（美式英语）;
vi. 呈球形，成团块;[美国俚语、口语]狂欢作乐，消遣;尽情作乐，尽情地玩;
🗣️ 情景例句
and an advance payment waiting for you
和预付稿酬等你来
Here's no necessary.
我看没这必要。
Her mother died when she was eight years old.
她8岁时母亲就去世了。