She smiled widely, showing her toothless gums.她张了嘴笑, 露出没有牙的牙床。

The toothbrush gently removes plaque without damaging the gums.牙刷轻轻地刷去牙斑, 丝毫没有伤到牙龈。

The trouble was I hadn't got the right kind of gum.麻烦的是我手头没有合适的胶水。

He was holding up a pound note that had been torn in half and stuck together with gum.他拿着一张被撕成两半又用胶水粘好的一英镑纸币。

She sucked a gum while she listened.她一边听一边吮着橡皮糖。

It is a mild infection in which a baby's eyelashes can become gummed together.婴儿的睫毛粘在一起是轻度感染的表现。

He gummed the envelope.他给信封涂上胶水。

This tree gums in the spring.这种树春天分泌树胶。