thumb index 书边标目
thumb index cleft 拇食指间隙
thumb-index finger pressing method 拇食指押手法
thumb-index 给安排字母索引
left and right thumb index 左右两边拖动条的默认起始位置
The Thumb and Index Finger 大拇指和食指
Now, a study of chick embryos shows that birds do indeed have thumb, index, and middle "fingers" in their wings.
现在，一份对鸡胚胎的研究，鸟类的翅膀的趾中确实有类似于人类拇指、食指和中指的趾的分化。
His left forearm and three fingers on his right hand were amputated-the thumb, index, and middle.
他的左前臂和右手的三个手指：拇指、食指和中指，被截肢。
Use your thumb and index fingers to gently massage your ear lobes in small circles.
用你的大拇指和食指捏住耳垂，进行小弧度的温柔按摩。 享受几分钟后，移动你的手指到外耳的中部，轻轻地旋转你的整个耳朵。
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