| 释义 |
thumb index
释义
拇指索引：指书籍（如词典）前沿切割的一系列通常标有标签的凹槽，以便于查找。
例句
1·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。
2·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。
3·Say when you're at the front of C prime, your thumb points to the right, your index points up because that's where the surface is, and then your middle finger will point out.
你在曲线C的前端，你的拇指指向右边，你给指出来了，因为那就是这个表面所在，然后你的中指就会指出。
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