Microschlieren
显微纹影仪
🗣️ 情景例句
Your mother is thinking of
你妈妈正考虑
The proud man felt humbled by Karl's kindness.
那个傲慢的男人为卡尔的和蔼亲切而自惭形愧。
Imagine a pen attached to the weight in such a way that its point rests upon a piece of paper on the floor.
假定把一支笔拴在重物上，笔尖落在地板上的一张纸上，