這是新系統的一大弊端。

　　This is the one major drawback of the new system.

　　他們用許多難懂的大詞。

　　They use a lot of big words.

　　保健已經(jīng)成為大生意。

　　Health and fitness have become big business.

　　這婚禮可是一大盛典。

　　The wedding was a great occasion.

　　他們要養活一大家人。

　　They have a large family to feed.

　　我釣的魚(yú)有這么大呢。

　　The fish I caught was yay big.