上下颠簸 meaning in Chinese

to pitch
toss about

The boat went up and down the waves .
小船随着海浪上下颠簸。
The bus jogged along .
那辆公共汽车上下颠簸地行驶。
E . t . was riding in elliott ' s basket , bouncing up and down again … with the world at their heels
又在艾略特的车筐里随着自行车上下颠簸起来… …然而似乎有一世界的人在他们身后紧跟、向他们逼近。
This is especially important when had weather makes a flight rough and bumpy , when a plane is late , or when there is an emergency
如果碰到坏天气，飞机上下颠簸，或飞行误点，或出现紧急情况，这种镇静的情绪尤为重要。
He walked at the other s heels with a swing to his shoulders , and his legs spread unwittingly , as if the level floors were tilting up and sinking down to the heave and lunge of the sea
他摇晃着肩膀跟在那人身后走着，两条腿不自觉地叉开，仿佛平坦的地板在随着波涛左右倾侧，上下颠簸，那宽阔的房间似乎装不下他那晃动的脚步。