一个英语句子的翻译--------------高手帮忙

Question

Do you know that you use your watch as a compass（指南针）on a sunny day? Take a watch and point the hour-hand in the direction of the sun. 【Imagine a line which runs from the center of the watch through a point halfway between the hour-hand and number one.】 This line will surely point south.
1、解释【】里句子中的run 如何翻译？through a point halfway 如何翻译？
2、标准翻译【】里的句子，谢谢

Answer 1

穿过
假想一条穿过表中心和时针与一点连线的中点的线

Answer 2

想象有一条直线从中心运行的手表通过一个点中间和时针走起来都有和一号