finger and thumb

例句：

1. 1.I can't reach the top of the tree because my fingers and thumbs are too short.
   我够不到树顶，因为我的手指和拇指太短了。
2. 2.The artist used his finger and thumb to paint the picture.
   这位艺术家用他的手指和拇指来画画。
3. 3. The child was playing with his finger and thumb.
   那个孩子正在用手指和拇指玩耍。