习惯用语by hap1.偶然; 碰巧2.可能, 也许in hap1.偶然; 碰巧2.可能, 也许on hap1.偶然; 碰巧2.可能, 也许through hap1.偶然; 碰巧2.可能, 也许neither to hap nor to wynd1.[苏]既不往东, 也不往西; 既不走这条路, 也不走那条路