Meaning of gāng hǎo:
gāng hǎo
刚好
Adverb
just; exactly; to happen to be
Wǒmen dào chēzhàn de shíhòu, huǒchē gānghǎo yào chūfā.
我们到车站的时候,火车刚好要出发。
We arrived at the station just as the train was about to leave.
Zhè tiáo qúnzi duì wǒ lái shuō gānghǎo héshì.
这条裙子对我来说刚好合适。
This dress fits me exactly.
Wǒ gāng hǎo yǒu shíjiān cānjiā nǐ de shēngrì pàiduì.
我刚好有时间参加你的生日派对。
I just happen to have time to attend your birthday party.