Meaning of gāng:
gāng
刚
Adjective
hard; firm; strong
Zhè kuài shítou fēicháng gāng, hěn nán dǎ suì.
这块石头非常刚，很难打碎。
This rock is very hard and difficult to break.
Tā gāngcái shuō tā xiǎng chūqù.
他刚才说他想出去。
He just said that he wants to go out.
Zhè gēn shéngzi fēicháng gāngqiáng, bù róngyì duàn.
这根绳子非常刚强，不容易断。
This rope is very strong and not easy to break.
Adverb
just; barely; exactly
Wǒ gāng chī wán wǔfàn.
我刚吃完午饭。
I just finished lunch.
Wǒ gāng dào jiā, jiù kāishǐ xià yǔ le.
我刚到家，就开始下雨了。
I had barely arrived home when it started raining.
Wǒ gāng gāng dào jiā.
我刚刚到家。
I just got home.
