Subject + 够 (+ 不到) + Object
够 (gòu) means "enough" or "to reach." It can indicate sufficiency (as in "enough money") or the physical ability to reach something. When combined with 不到, it means "unable to reach."
我的钱不够,还差五十块。
wǒ de qián bú gòu, hái chà wǔshí kuài.
I don't have enough money — I'm still fifty yuan short.
柜子太高了,我够不到上面的东西。
guìzi tài gāo le, wǒ gòu bú dào shàngmiàn de dōngxi.
The cabinet is too tall; I can't reach the things on top.
时间够不够?我们还需要十分钟。
shíjiān gòu bú gòu? wǒmen hái xūyào shí fēnzhōng.
Is there enough time? We still need ten more minutes.