It USES only a tiny amount of gas.
它只使用极少量的汽油。
With each pulse of the laser beam, a tiny amount of corneal tissue is removed.
每一次激光束的脉冲移除微量的组织。
This afternoon, he got a tiny amount from about 20 snakes - about 3 tablespoons in all.
今天下午,他从约20条蛇嘴里,一共弄出来约3汤匙毒液。