Pregnene
[化] 孕烯; 孕甾烯\\n[医] 孕烯
🗣️ 情景例句
I need multimedia capability for my system.
我的计算机系统需要多媒体功能。
A man knows his companion in a long journey and a little inn.
路遥知马力，日久见人心。
when he knew that he was dying, he made me promise to go on my own.
他知道自己已奄奄一息，于是他要我答应一定单独回故乡一趟。