先导

gāi chē duì yóu mó tuō chē xiān dǎo

该车队由摩托车先导。

The motorcade was preceded by motorcycles.

cuò wù shì zhèng què de xiān dǎo

错误是正确的先导。

Error is the precursor of what is correct.

chōu xiàng pài xiān dǎo

抽象派先导

forerunner of abstractionism

kē yán shì yìng yòng de xiān dǎo

科研是应用的先导。

Research is the precursor of application.