他们长得很像，很难辨认。

Tāmen zhǎng de hěn xiàng, hěn nán biànrèn.

They look so alike that it's hard to tell them apart.

现今的电话已经可以透过指纹来辨认身份。

Xiànjīn de diànhuà yǐjīng kěyǐ tòuguò zhǐwén lái biànrèn shēnfèn.

Phones nowadays can identify you through fingerprints.

市面上很多冒牌货，要小心辨认真假。

Shìmiàn shàng hěnduō màopáihuò, yào xiǎoxīn biànrèn zhēnjiǎ.

There are lots of counterfeits on the market, so be careful to tell what's real and what's fake.