手势：在鼻子前上下摇晃食指。
上下摇晃使得二氧化碳在罐子里形成了气泡。
很快它飞走了，那个树枝因为它飞走时的一推而上下摇晃着。
Presently it flew off and the branch was swinging up and down from the pressure of its flight.
然而，钢架的柱子是可以随着摇晃自由上下摆动，有钢管托牢牢固定在基座上。
The frame’s columns however are free to rock up and down within steel shoes secured at the base.
然而，钢架的柱子是可以随着摇晃自由上下摆动，有钢管托牢牢固定在基座上。
The frame's columns, however, are free to rock up and down within steel shoes secured at the base.
它可以做出肩、肘以及腕部的复杂动作(包括上下翻动、左右摇晃以及侧向移动)，这在以前是不曾有过的。
It also responds to shoulder, elbow, and advanced wrist movements (including pitch, roll, and yaw), more than ever before.
他朝它们的头打去，听到上下颚啪地咬住的声音，还有它们在船底下咬住了鱼使船摇晃的声音。
He clubbed at heads and heard the jaws chop and the shaking of the skiff as they took hold below.
震动会使房屋滑出它们的建筑，会使建筑物收缩、廓张，两边摇晃，和上下弹跳。
The vibrations can cause houses to slide off their foundations, and can make buildings contract, expand, shake from side to side, and bounce up and down.
震动会使房屋滑出它们的建筑，会使建筑物收缩、廓张，两边摇晃，和上下弹跳。
The vibrations can cause houses to slide off their foundations, and can make buildings contract, expand, shake from side to side, and bounce up and down.
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