jìnrì qìwēn jiàng de lìhai, wǒ mā yǐjīng bǎ yā xiāngdǐ de hòu bèizi fān chūlái le

近日气温降得厉害，我妈已经把压箱底的厚被子翻出来了。

The temperature has dropped sharply recently; my mom has already dug out the thick quilt from the bottom of the chest.