城市面貌日新月异，很多老建筑都被改造了。

Chéngshì miànmào rìxīn yuèyì, hěn duō lǎo jiànzhù dōu bèi gǎizào le.

The appearance of the city is changing rapidly, and many old buildings have been renovated.

互联网技术日新月异，给我们的生活带来了巨大变化。

Hùliánwǎng jìshù rìxīnyuèyì, gěi wǒmen de shēnghuó dài lái le jùdà biànhuà.

Internet technology is changing rapidly and has brought great changes to our lives.

科技发展日新月异，新产品不断出现。

Kējì fāzhǎn rìxīnyuèyì, xīn chǎnpǐn bùduàn chūxiàn.

Technology is developing with each passing day, and new products keep appearing.