Cesium hollow cathod
[电] 空心阴极
🧩 词语组成解析
n. 铯\\n[化] 铯Cs
hollow
['hɑlo]
adj. 空的;空洞的;虚伪的;空腹的;
n. 洞，坑;山谷;
vt.& vi. 挖空（某物），变空;挖出（孔、洞）;
adv. 完全，彻底;
🗣️ 情景例句
Thank you for inviting me.
谢谢你的感情邀请。
Did the chicken come before the egg?
先有鸡还是先有蛋？
The characters on the paper were white, and the rest of the paper was black.
纸上的汉字呈白色，其余部分成黑色。