Helis
abbr. hot electron layer ion source 热电子层离子源
🗣️ 情景例句
If you aren't busy today, how about lunch?
如果你今天有空的话，吃一顿午饭如何？
Do you have any more colors?
有别的颜色吗？
You always say that,but we never win anything!
你老是那样说，但是我们从来没赢过！