Chtokinin
[机] 细胞激动素类
🗣️ 情景例句
If you've been with someone for this length of time you'll have to ask yourself what reservations have I got?
如果你和某人生活了这么长时间，你得问一下自己，你对这段婚姻满意吗？
How much is a round-trip ticket to Beijing?
一张到北京的来回票要多少钱？
Why do you have to work so hard?
为什么你要这样卖力地工作呢？