Question

again
a.gain  AHD[…-gµn“]   DJ[*6gen]  KK[*6gWn]
adv.（副词）
1.Once more; anew:
    再次；重新：
    try again.
    再试一下
2.To a previous place, position, or state:
    恢复原样：回到原处、原位或原来状态：
    left home but went back again.
    离家但又回来
3.Furthermore; moreover.
    再则；再且
4.On the other hand:
    另一方面：
    She might go, and again she might not.
    她可能去，也可能不去
5.In return; in response; back.
    作为回报；作为回应；回答
ORIGIN
1.Middle English  influenced by Old Norsei gegn [again]
    中古英语  受 古斯堪的纳维亚语i gegn的影响 [再一次]
2.from Old Englishongeagn [against]
    源自 古英语ongeagn [与…相反]