发射前的点火程序必须经过多轮模拟,任何细节都不能出错。Fāshè qián de diǎnhuǒ chéngxù bìxū jīngguò duō lún mónǐ, rènhé xìjié dōu bù néng chūcuò.The ignition procedure before launch must go through multiple simulations, and no detail can go wrong.
爸爸蹲在地上,用火柴给炉子点火。Bàba dūn zài dìshang, yòng huǒchái gěi lúzi diǎnhuǒ.Dad crouched on the ground and lit the stove with a match.
汽车点火后,发动机发出了低低的声音。Qìchē diǎnhuǒ hòu, fādòngjī fāchū le dīdī de shēngyīn.After the car was started, the engine made a low sound.