数学的美只向更有耐心的追随者展示。
The strength of the pack is the wolf, and the strength of the wolf is the pack.
The world is so full of people, so crowded with these miracles, that they become commonplace and we forget.
The best solutions often come from listening to those who work on the water every day.
解释:手指粗于胳膊, 胳膊粗于大腿, 病情必然很重。