you'd better go now ,----you'll miss the next traina,if b,or else c,or not d ,unless

you'd better go now ,----you'll miss the next traina,if b,or else c,or not d ,unless
you'd better go now ,----you'll miss the next train
a,if b,or else c,or not d ,unless

you'd better go now ,----you'll miss the next traina,if b,or else c,or not d ,unless
or else,是否则的意思

b,or else

or else=or=otherwise否则
很高兴为你解答！
老师祝你学习进步！
望采纳，多谢你的问题！^_^