Mercaptotropone
巯基酮
🗣️ 情景例句
It's about the size of the United States, but it has a population of only 16.5 million.
它和美国一般大，但人口却只有一千六百五十万。
Everyone's ready and waiting for you.
大家都好了，就等你啦！
How long have you been here?
你在这里多久了？