Pregniotin
胎盘抗原
🗣️ 情景例句
A year is really a short time, and later you will be glad you postponed getting married.
一年其实是很短的，过后你将会为你推迟了婚期而感到高兴的。
They serve good food in this restaurant.
这个餐馆供应很好的食物。
Oh, good! He's coming down the ladder, now.
噢，好！现在他正从梯子上爬下来。