父母对孩子有很高的期望，一旦孩子让他们失望，他们就会给孩子施加很大的压力
Parents have high expectations for their children, and once the children let them down, they will push a lot of pressure on their kids.
一旦此调用针对当前时间步长返回，就可以清空上一步长施加到这些物体上的力，然后获得动态物体的当前方位和角度。
Once the call returns for the current time step, you clear the forces applied to the objects from the last step, and then get the current position and Angle of your dynamic body.
但问题是，一旦劝说无效，另外的大国就拒绝施加压力。
The trouble is that when persuasion has failed the other big powers have refused to apply pressure.
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