Four long years passed.

漫长的四年过去了。

youdao

Four years have passed, but I never forgot you.

四年来我从未忘记你。

youdao

Now, four years has passed and I am much more mature than I was.

现在，四年过去了，而我也比那个时候成熟多了。

youdao

Now, four years has passed and I am much more mature than I was.

现在，四年过去了，而我也比那个时候成熟多了。

youdao