But it does have an important purpose; it is sort of like the plastic tip on each end of a shoelace.

但它确实有一个重要的目的。它有点像鞋带两端的塑料头。

youdao

To calculate finger length accurately you must measure the distance from the midpoint of the lowest crease at the base of the finger on the palm side to the very end of the fleshy tip.

要准确计算手指长度，就必须测手指掌面最低折痕中点到肉的尖端尾部之间的距离。

youdao

Carbon monoxide has a simple but distinctive outermost orbital structure with two side-by-side lobes sticking out from the end of the tip, one with a positive phase and the other a negative phase.

一氧化碳有很简单且独特的最外层轨道结构，两个并列的叶形从尖端的末梢伸出，一个带正相而另一个是负相。

youdao

Phelps finally made Wigan's early pressure pay when he got on the end of Sam Tomkins' kick-through, and only the faintest of finger-tip knock-ons by Richards prevented Amos Roberts adding to that score when he got on the end of Thomas Leuluai's high ball.

BBC: Warrington 16-8 Wigan

Birmingham had Barry Ferguson to thank for clearing the ball off Utaka's head after a knock-back by the impressive Piquionne, before Seb Larsson forced James into a tip-over at the other end.

BBC: Portsmouth 2-0 Birmingham