Hydrorubber
氢化橡胶
🗣️ 情景例句
What shade do you recommend for me?
你给我推荐什么样的颜色？
How long will you remain in the United States?
你将会在美国逗留多久？
which we may call respectively the tough and the gentle.
我们分别称之为强硬法和温柔法。