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） 。
Hold the floss tightly between your thumbs and forefingers, with about an inch (2.5 cm) of floss between them.
他用拇指和食指比划出一英寸的厚度说，“安全指导手册有这么厚。”
'The safety instruction book is like this,' he adds, holding his thumb and forefinger an inch apart.
不过贵方的通讯员掌上宝的触笔不翼而飞时，他用小拇指在6英寸小屏上游走自如。
Your correspondent had no trouble using his little finger on his palmtop’s six-inch touchscreen when the stylus went AWOL.
谢尔顿—要知道，意大利家庭主妇们有一个“大拇指守则”，一把直径大约一英寸的干意大利面煮熟以后体积会翻倍，就足够一个人的分量了。
Sheldon - You know, Italian housewives have a rule of thumb. A handful of dry pasta about an inch in diameter is sufficient for each person as it doubles in volume when cooked.
医生看着我然后用他的拇指和食指比当了大约一英寸的距离。
The doctor looks at me and he holds his thumb and forefinger about an inch apart from one another.
医生看着我然后用他的拇指和食指比当了大约一英寸的距离。
The doctor looks at me and he holds his thumb and forefinger about an inch apart from one another.
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