Even after two decades we still recognized each other.

虽然过去了二十年，我们仍然认得对方。

I would look up the words in the dictionary and still not fully understand the meanings.

我用词典查这些单词，然而还是不能完全理解它们的意思。

He’s tall, but his brother is still taller.

他个子高，他哥哥更高。

Work hard to achieve still greater success.

努力工作以取得更大的成功。

a still lake

平静的湖泊

Still waters run deep.

静水流深。

They told the injured driver to stay still until the emergency personnel arrived.

他们让受伤的司机在急救人员到来之前不要动。