1 (in baseball 棒球) the left part of the field, or the position played by the person who is there 左外场；左场手位置

2 (especially US, informal 尤为美，非正式) an opinion or position that is strange or unusual and a long way from the normal position 离奇古怪的看法﹙或意见﹚: No one else is going to go along with you on that one; you're way out in left field. 在那个问题上，没人会赞同你的观点的，因为你的观点实在是太古怪了。