1. She tucked her thumbs into the waist of her trousers. 她把拇指插进裤腰里。
2. Her thumbs were hooked into the pockets of her jeans. 她的双手拇指钩在牛仔裤袋里。
3. Most children suck their thumbs but they grow out of it. 大多数孩子都吮拇指,大了就好了。
4. I'm just going to be hanging around twiddling my thumbs. 我正要无所事事地旋弄拇指。
5. Hold the floss tightly between your thumbs and forefingers, with about an inch (2.5 cm) of floss between them. 两只手的食指和大拇指分别捏紧牙线的一端, 中间留出一英寸长(2.5厘米) 。