【词汇讲解】
1. tummy n. 肚子,胃
如：Bud, stop carrying on about your tummy ache like that.
巴德, 别为肚子痛大呼小叫了。
2.tighten up 绷紧，加强
如：The police are tightening up on drunken driving.
警方目前采取严厉手段对付醉酒驾车行为.
He says he will take step to tighten up the administration.
他说他将采取措施加强行政管理。
3. waist n. 腰, 腰部
如：Her hair nearly reached down to her waist.
她的头发几乎垂到了腰部.
If the skirt is too big, we can take in the waist.
要是裙子太大了, 我们可以把腰部收紧一些。