Polygenism
n. (人种)多元发生说
🗣️ 情景例句
No. No bottle opener.
没有 ，没有开瓶器。
If there were no clouds, we should not enjoy the sun.
吃得苦中苦，方知甜中甜。
Please tell me how I can solve this problem.
请告诉我怎样才能解决这个问题。