signs of wear

The446 Canadian nurses in the study were assigned to wear either masks or N95 respirators while treating patients with respiratory illness and signs of fever over a roughly three-month period.

在大约三个月的里，此项的446名加拿大护士在护理患有呼吸系统疾病和发烧症状的病人时被指派佩戴外科口罩或者是N95呼吸防护口罩。

The roller bearing shows clear signs of wear and tear.

这滚柱轴承有明显的磨损.

This suit is showing some signs of wear.

这套衣服有一些穿旧了的痕迹。

All parts of the aircraft are closely scrutinised for signs of wear or damage.

飞机的所有部件都经过严密检查以确定是否有磨损或毀坏的迹象.

His shoes were beginning to show signs of wear.

他那双鞋看样子快穿坏了。

For example, the motorcycle helmet claims to offer good visibility on one side, while the car has some notable signs of wear.

例如，摩托车头盔一侧的能见度良好，汽车有明显使用过的痕迹。

The clothes show signs of wear.

衣服穿旧了。

The spine may show signs of wear.

书脊可有磨损痕迹.