jiǎn yàn
检验汽车机件
Jiǎnyàn qìchē jījiàn.
Inspect automobile parts.
实践是检验真理的唯一标准。
Shíjiàn shì jiǎnyàn zhēnlǐ de wéiyī biāozhǔn.
Practice is the sole criterion for testing truth.