作比赛时可数,作竞争时不可数.
具体看下面.
competition
KK:[]
DJ:[]
n.
1.竞争,角逐[U][(+with/between/for)]
Competition among youths to enter the best colleges is intense.
年轻人想进一流大学的竞争是很激烈的.
2.比赛,竞赛;赛会[C][+to-v]
I entered a chess competition and finished third.
我参加了象棋比赛名列第三.
3.(总称)竞争者;比赛对手[U]
He's no competition for Henry.
他不是亨利的对手.