The conversation went off at a tangent.
交談突然偏離了正題。
These two curves are tangent.
這兩個弧相切。
Bioengineering is an emergent branch of learning.
生物工程是一門新興的學問。
Chenguan world& more effulgent due to you!
晨光世界，因為有你更精彩！
Meanwhile, "Hanfu" is an important part of Chinese civilization, and it is an effulgent pearl in the history of national culture.
同樣，漢服是華夏文明的重要有機組成部分，也是漢民族文化史上的一顆光輝璀璨的明珠。