I thought back to the time when I tried so hard to keep the fingerprints off the mirrors and doors when my children were small.

回想起当我的孩子还小时，我竭力不让镜子和房门沾上指印。

youdao

When I learned English, I felt so hard, because no matter hard I tried, I just could not understand the grammar.

在我学英语的时候，我感到很困难，因为无论我多么努力去尝试，我就是无法理解语法。

youdao