汽车在公路上行驶,是一种旋转运动.______.
由平移与旋转定义可知,汽车在平地上行驶时,车身的运动是平移,车轮的运动是旋转.
故答案为:×.
人类心理的发生有两个基本条件:一是劳动,二是_____。
中英对译
1、这首歌听起来很美,难怪这么多人喜欢。
The song very beautiful, so many people like it.
2、你为什么不尝试一下其他的学习英语的方法呢?
Why don't you other ways English?
3、我妈妈在业余时间学习法语,还学日语。
In her spare time, my mother learns French Japanese.
4、他去上海出差时,顺便拜访了他叔叔。
He his uncle when he went to Shanghai on business.
5、孩子们需要许多东西,首先他们需要爱。
Children need many things, they need love.