那些拥有数字录像机（DVR）的老用户看电视的时间要比新用户长。

Users who owned a DVR early on used it to watch TV far more often than those who only got a DVR recently.

与新用车轮踏面相比，测试得到的磨耗后车轮踏面在其名义直径位置凹陷区域附近容易形成踏面两点接触。

Compared to the new wheel tread, the worn tread is easy to form two-point contact nearby the depression area of the nominal diameter position of wheel tread.