Verofylline
二氢二甲基甲丁基嘌呤二酮
🗣️ 情景例句
We have done so much
我们已做了这么多的事
I am Gary Swan, president of this company.
我是盖瑞.斯万，这家公司的总裁。
Look at the sun! It's very bright.
瞧，阳光灿烂！