医生建议先化验血液样本,再判断是否需要进一步治疗。Yīshēng jiànyì xiān huàyàn xuèyè yàngběn, zài pànduàn shìfǒu xūyào jìn yí bù zhìliáo.The doctor suggested testing the blood sample first before deciding whether further treatment was needed.
护士抽了一点血,送去化验。Hùshi chōu le yìdiǎn xuè, sòng qù huàyàn.The nurse drew a little blood and sent it for testing.
这批牛奶要先化验合格,才能上市销售。Zhè pī niúnǎi yào xiān huàyàn hégé, cái néng shàngshì xiāoshòu.This batch of milk must pass laboratory tests before it can go on sale.