3 sentences

1. 光是跟上它们就够难了。

   guāng​shì gēn shang tā​men jiù gòu nán le.

   Just keeping up with them is hard enough.

   Source: OpenSubtitles

2. 光是今年我们就已经种了一万棵树。

   guāng​shì jīn​nián wǒ​men jiù yǐ​jing zhòng le yī wàn kē shù.

   This year alone, we’ve already planted ten thousand trees.

   Source: CCMatrix

3. 如今，光是在芝加哥的街道上就有三万架闭路监控摄像头。

   rú​jīn, guāng​shì zài zhī​jiā​gē de jiē​dào shang jiù yǒu sān wàn jià bì​lù jiān​kòng shè​xiàng​tóu.

   Today, there are thirty thousand closed-circuit surveillance cameras on the streets of Chicago alone.

   Source: CCMatrix