fail

詳細解釋：

fail

v.（動詞）
failed,fail.ing,fails
v.intr.（不及物動詞）
To prove deficient or lacking; perform ineffectively or inadequately.
表現欠佳：證明不足或不夠；活動受損或不充足
To be unsuccessful:
失敗：不成功：
例句：
a valiant attempt that failed.
雖敗猶榮

To receive an academic grade below the acceptable minimum.
不及格：達到的學術等級低於最低限度

To prove insufficient in quantity or duration; give out:
用盡：數量或持續時間證明為不足；用完：
例句：
The water supply failed during the drought.
在乾旱期供水不足

To fall short, as in what is expected of one:
未達成：不能達到別人所期望的：
例句：
failed in her obligations to the family.
她對家庭沒有盡到責任

To decline, as in strength or effectiveness:
減弱：力量減弱或功能衰退：
例句：
The patient`s heart failed.
病人的心跳減弱

To cease functioning properly:
徹底中止運轉：
例句：
The engine failed.
引擎徹底停止了運轉

To become bankrupt or insolvent:
破產：
例句：
Our family business failed in 929.
929年我們家族破產了

v.tr.（及物動詞）
To disappoint or prove undependable to:
使失望或不可信賴：
例句：
Our sentries failed us.
我們的哨兵令我們失望

To abandon; forsake:
拋棄；放棄：
例句：
His strength failed him.
他喪失了力氣

To omit to perform (an expected duty, for example):
遺漏未做：忽略而未能完成（例如，所期望的任務）：
例句：
.We must . . . hold . . . those horrors up to the light of justice. Otherwise we would fail our inescapable obligation to the victims of Nazism: to remember.(Anthony Lewis)
.記住：我們必須將那些慘事交付法庭審判。否則，對遭受 * 主義迫害的人，我們將無法盡到應盡的責任.(安東尼·劉易斯)

To leave (something) undone; neglect:
疏忽：留下（某事）沒做完；疏忽：
例句：
failed to wash the dishes.
忘了洗盤子

To receive an academic grade below the acceptable minimum in (a course, for example):
不及格：達到的學術等級低於能接受的最低限度（如某門課程）：
例句：
failed algebra twice.
代數兩次不及格

To give such a grade of failure to (a student):
給（學生）不及格：
例句：
failed me in algebra.
給我代數不及格

n.（名詞）

Failure to deliver securities to a purchaser within a specified time.
保證失信：未能在特定時間內將保證金交給買主
Failure to receive the proceeds of a transaction, as in the sale of stock or securities, by a specified date.
交割失信：在股票或抵押品售出後，未能在規定日期內辦理交接手續

<習慣用語>without fail
With no chance of failure:
一定，必定：沒有失敗的可能：
例句：
Be here at noon without fail.
一定在正午時到這裡

來源：
Middle English failen
中古英文 failen
from Old French faillir
源自 古法文 faillir
from Vulgar Latin *fallore
源自 俗拉丁語 *fallore
variant of Latin fallere [to deceive]
拉丁語 fallere的變體 [欺騙]