Thymosterin
环氧麦角甾烯三醇乙酸酯
🗣️ 情景例句
One apple. Two apples. Three apples. Four apples.
一个苹果。两个苹果。三个苹果。四个苹果。
It is my pleasure to introduce the keynote speaker for today.
我很荣幸地介绍今天的主讲人。
Hello. Can I speak to Pippa, please?
喂！请问皮帕在吗？