android:layout_gravity="center_horizontal"是设置该属性的控件对于它的父控件是横向居中，而android:gravity="center_horizontal"则是该控件内的子控件或者内容横向居中
求翻译:In contrast to the RMR layout,however,the center of gravity of the engine itself is actually past the rear axle.是什么意思?待解决 悬赏分:1 - 离问题结束还有 In contrast to the RMR layout,however,the center of gravity of the engine itself is actually past the rear axle.问题补充:匿...