🧩 词语组成解析
knee
[ni]
n. 膝;膝盖;
vt. 用膝盖碰;
🗣️ 情景例句
It was wet yesterday.
昨天下雨。
We've only sold our product at trade fairs, not in an on-going sales campaign.
我们的产品只在商展时展售，而没有办促销活动。
The first records the arrival of longitudinal vibrations.
首先记录下的是纵向波的到达；