Nonroot
非词根(语素)
🗣️ 情景例句
No, I'm sorry. This is our rock-bottom price.
很抱歉，这是我们的最低价格。
Excuse me I couldn't write you sooner.
对不起我不能尽快给你写信。
its action depends on the surface, water or ground, over which it rides.
它的飞行取决于它所悬浮的水面或地面。