Don't read books with your eyes exposed to strong sunlight.
不要让眼睛暴露在强烈的阳光下来读书。个人觉得比in the sun好,我们总是说在光线充足的地方看书,所以in the sun也是有道理可循的,问题的关键是不要让眼睛受强烈阳光的直接侵害。
在……的帮助下:with the help/assistance of
帮助……做什么事:help (to) do sth. to可以省略
Don't read a book in the sun.
在......的帮助下;with the help of
帮助做;help (to) do sth
Don't read in the sun
in... Help
Help... Do what
这是简单的口语性翻译,但没错
Do not read the book under the sunshine..
在...的帮助下:with the help of
帮助做:help (to) do sth
Don't read the book in sunlight.