Dihydroxy-
二羟基
🗣️ 情景例句
There's no doubt about that.
此事确定无疑。
Familiar paths and old friends are the best.
熟路好遵循，老友最可珍。
They are constantly after the turtles, who peacefully submit to all sorts of indignities.
它们经常追逐海龟，海龟则温顺地忍受着各种侮辱。