Correct
震荡
/ zhèndàng /
Strokes
Definition
to shake up/to jolt/to vibrate/to oscillate/to fluctuate
Example
As a Verb
shake; shock; vibrate; oscillate
1
Huíshēng
回声
zhèndàng
震荡
,
shānmínggǔyìng
山鸣谷应
。
Peals of echo rumbled through the valley.
2
Shèhuì
社会
zhèndàng
震荡
social upheavals