释义：君子在面对挫折、困难的时候，应该反躬自问，修养品德。蹇（jiǎn），多指行动迟缓、困苦、不顺利的意思。

The language of cells is written in molecules and forces.

The future of forestry belongs to those who see trees as living systems, not just standing inventory.

I draw from the crowd a lot.