Sigmatron
高能 X 射线仪, [核]西格马加速器
🗣️ 情景例句
We talk about him at dinner time.
我们吃晚餐时总谈起他。
His ear is wounded, Does it hurt?
他的耳朵受伤了，疼不疼？
There were twenty cars in the race.
参加比赛的有20辆汽车。