言而当,知也;默而当,亦知也。
言语得当,是智慧的表现;沉默得当,也是智的表现。
The energy sector must lead by example in the fight against climate change.
小说是一面镜子,不仅反映世界,也反映读者的灵魂。
The study of automorphic forms is a reflection of the unity of mathematical ideas.