Tronics
低温电子学
🗣️ 情景例句
And tell them you want to go on the tour that goes down into the canyon.
跟他们说你要参加到峡谷里去的旅游团。
Nothing for nothing and very little for a half penny.
一分钱，一分货。
He looks young,too.
他看上去也很年轻。