ph.
1. He saved the girl from drowning at the cost of his own life.
他舍身把溺水的姑娘救出来。
1. 以...为代价：at one time曾经,从前曾 | at the cost of以......为代价 | at the least 至少;
2. 牺牲,以...为代价：At present, he is on holiday.目前,他正在度假. | at the cost of牺牲,以...为代价 | at the moment此刻,目前
3. 丧失,牺牲：不惜任何代价,无论如何 at all costs | 丧失,牺牲 at the cost of | 势如破竹的胜利 an overwhelming victory
4. 以......代价：at all costs 不惜任何代价、无论如何 | at the cost of 以...代价 | count on 依靠、指望、