现在我们先看头两项，第三项将于稍后讨论。

We will look at the first two in this chapter and the third one in the next.

第三项是在笔上增加橡皮点，这样可以使铅笔不容易划出孩子们充满汗水的小手。

His third was to add rubbery dots that keep the pencils from slipping out of sweaty little hands.

第三项安全配备是一根又长又细的竿子，用来探测雪中深处以找出被埋滑雪者的精确位置。

The third piece of safety equipment is a long, think pole. It's used to probe deep into the snow to pinpoint the location of a buried skier.