“惨败”常见的英文表达有 “a crushing defeat”、“a disastrous defeat” 或 “a heavy/rout defeat” ，以下为你详细介绍：
含义：“crushing”有“压倒性的；令人崩溃的”意思，“a crushing defeat”强调失败的程度非常严重，给失败方带来极大的心理冲击和挫败感，是一种具有毁灭性意义的失败。
例句：Our team suffered a crushing defeat in the final match, losing 10 - 0.（我们队在决赛中遭遇了惨败，以0比10落败。）
含义：“disastrous”意为“灾难性的；极糟糕的”，“a disastrous defeat”突出失败造成的后果非常严重，可能会带来一系列不利的影响，如士气低落、声誉受损等。
例句：The company experienced a disastrous defeat in the market competition, resulting in a significant decline in sales.（公司在市场竞争中遭遇了惨败，导致销售额大幅下降。）
a heavy defeat：“heavy”在这里表示“重大的；惨重的”，“a heavy defeat”侧重于描述失败的规模和程度较大，是一种较为严重的失败。
例句：The visiting team suffered a heavy defeat at the hands of the home team.（客队在主队面前遭遇了惨败。）
a rout defeat：“rout”本意是“溃败；大败”，“a rout defeat”强调失败方在战斗或竞争中完全被打败，毫无还手之力，呈现出一种溃不成军的局面。
例句：The rebels were dealt a rout defeat by the government troops.（叛军被政府军打得惨败。）