1·They rub themselves against stones and roots.
它们在石头和根茎上摩擦自己。
2·With the help of an ice cube, gently rub the ice on her back and as the ice melts off her.
需要用一小块儿冰，轻轻地用冰块摩擦她的后背，让它在她身上慢慢融化。
3·When the rats detect the smell, they stop and rub their legs to indicate a sample is infected.
老鼠嗅到这种气味时会停下来，摩擦双腿，表明样本已被感染。
4·When the rats detect the scent, they stop and rub their legs to indicate a sample of infected.
当老鼠闻到气味时，它们会停下来摩擦自己的腿，这表示样本已被感染。
5·Second, because only male deer rub, the buck rub and its associated chemicals indicate the sex of the deer producing the rub.
第二，因为只有雄鹿会做出摩擦动作，摩擦动作和与之相关的化学物质表明了制造擦痕的鹿的性别。
6·She gave her knee a quick rub.
她很快地揉了揉膝盖。
—— 《牛津词典》
7·She sometimes asks if I want a back rub.
她有时问我是否想要一次背部按摩。
—— 《柯林斯英汉双解大词典》
8·The gold colouring had begun to rub off.
金黄色已经开始剥落了。
—— 《牛津词典》
9·I know I was stupid; you don't have to rub it in.
我知道我当时很愚蠢；你不必老提这件事。
—— 《牛津词典》
10·You may need to give the floor a rub-down with glasspaper.
你可能得用玻璃砂纸打磨一下地板。
—— 《牛津词典》