turbulence
n[U]
1 unrest or disturbance 動蕩; 混亂; 騷亂
political, social, religious, etc turbulence 政治的、 社會的、 宗教的...騷亂
(fig 比喻) emotions in a state of turbulence 紛亂的情緒.
2 violent or uneven movement of air or water 猛烈的或不穩定的氣流或水流
We experienced some slight turbulence flying over the Atlantic. 我們飛越大西洋時, 遇到一點不穩定的氣流.