but once
英
美
- but conj.但是prep.除...以外adv.仅仅;只pron.无不
- once adv.一次;曾经conj.一旦n.一次adj.曾经的
- Christmas come but once a year.
人生得意须尽欢。
- A man can die but once.
人生只有一回死。
- I made slow time down the steps but once on the flat I was all right.
我慢慢地下着楼梯,但当我一踏上平地时,我就不要紧了。