Symetron
多管环形放大器
🗣️ 情景例句
I must prepare my lessons.
我必须准备工课。
I have no idea what they're going to say, so I'll have to play it by ear.
我一点不知道他们将会说些什么，所以我只好见机行事。
Their population has now increased to 435,000, and today they make up about 13% of the population.
不过现在他们的人口已增长到435，000人，如今他们已占全国人口的13%。