Thermoionization
热电离
🗣️ 情景例句
This is a brand new product; it proved to be a craze in the American market.
这是一个全新的产品，在美国市场掀起了一股热销潮。
It is easier to descend than to ascend.
下降容易上升难。
We're packing our suitcases.We're going to leave tomorrow.
我们正在收拾手提箱。明天我们就要走了。