thundercloud
n. 雷云
复数 thunderclouds
例句
When a thundercloud comes over the kite.
当雷雨云笼罩了风筝之后。
The mechanism of thundercloud electrification is studied.
本文对雷暴云的起电机制进行了研究。
He blackened and scowled like a thundercloud, and kept his fists resolutely clenched, and his gaze fixed on the ground.
他的脸阴沉发怒象块带著雷电的云，坚决地握紧拳头，眼盯著地面。
