三天

jiē tōng méi qì yán chí le sān tiān

接通煤气延迟了三天。

Connection to the gas supply was delayed for three days.

sān tiān zhī hòu gěi tā zhāi diào le hū xī qì

三天之后给她摘掉了呼吸器。

After three days, she was taken off the ventilator.