趁着 + Condition + Verb Phrase
The preposition 趁着 (chènzhe) means "taking advantage of" or "while" and is used to indicate doing something while a favorable condition exists. It introduces a circumstance that the speaker wants to make use of before it passes.
趁着今天天气好,我们去公园野餐吧。
Chèn zhe jīntiān tiānqì hǎo, wǒmen qù gōngyuán yěcān ba.
Since the weather is nice today, let's go have a picnic in the park.
趁着孩子们还没放学,我赶紧把家里打扫了一遍。
Chèn zhe háizimen hái méi fàngxué, wǒ gǎnjǐn bǎ jiālǐ dǎsǎo le yī biàn.
While the kids hadn't gotten out of school yet, I hurried and cleaned the whole house.
趁着年轻,多出去看看外面的世界。
Chèn zhe niánqīng, duō chūqù kànkan wàimiàn de shìjiè.
While you're still young, go out and see more of the world.