昼夜温差过大时,桥梁金属部件会出现更明显的伸缩。Zhòuyè wēnchà guò dà shí, qiáoliáng jīnshǔ bùjiàn huì chūxiàn gèng míngxiǎn de shēnsuō.When the temperature difference between day and night is too large, the metal parts of bridges show more obvious expansion and contraction.
新疆冬天昼夜温差很大,白天要穿少一点。Xīnjiāng dōngtiān zhòuyè wēnchà hěn dà, báitiān yào chuān shǎo yīdiǎn.In winter the temperature difference between day and night is big in Xinjiang, so you should wear less during the day.
医生说温差太大容易感冒,要注意保暖。Yīshēng shuō wēnchà tài dà róngyì gǎnmào, yào zhùyì bǎonuǎn.The doctor said a large temperature difference makes it easy to catch a cold, so you should keep warm.