shakings
n. 震动；震惊；挥动，摇动
v. 握手；摇动；颤动；使劲甩动；扰乱（shake 的现在分词）
例句
When the flight runs into airflow, there will be shakings around. And during these periods, sometimes you will feel the loss of your weight, but the feelings will flash away very quickly.
飞机遇上气流，会有剧烈的颠簸，这时常常会有突然失重的感觉，但是只是一瞬间。
