Bioactivator
生物活性剂
🗣️ 情景例句
And this is my sister Susan and her husband Harry Bennett
这是我妹妹Susan和她丈夫Harry Bennett
Oh no! It's starting to rain.
哦，糟了！开始下雨了！
The boy mustn't go to school yet,Mr.Williams.
这孩子还不能去上学，