Bead cover
[机] 叶轮罩
🧩 词语组成解析
bead
[bid]
n. 有孔小珠，念珠;水珠，露珠;珠子项链;
vt. 用小珠装饰;使成串珠状;
vi. 形成珠状;起泡;
🗣️ 情景例句
Try this. It's size eight.
试试这一件。尺码是八号。
I never expected him to be so great.
我没有想到他会是那么了不起。
only of metal, which wears away by friction.
而是由金属组成，而金属可以随着磨擦而磨损殆尽。