I must not yield up a pin's point of the ground I had gained.

我决不能放弃我所获得的一针见血的地盘。

Noting all the subtle little changes as the're chasing a fish, and they can pin point that.

注意到追鱼时所有细微的变化，他们可以准确地指出这一点。

The room was in semigloom, for Scarlett had pulled down the shades to shut out the heat and brightness. Pin points of sunlight came in through minute holes in the shades and about the edges.

房间里半明半暗，因为思嘉把窗帘拉下来挡热气和阳光了，只有一小点一小点的亮光从帘子的小孔里和边缘上透进来。