unsuccessful
翻译
不成功的, 失败的
例句
Their first attempt was unsuccessful.
他们的第一次尝试没有成功。
He was an unsuccessful actor.
他是个不成功的演员。
语法模式
unsuccessful in ((sth./-ing)) 在（某事）上不成功 She was unsuccessful in her job search.
an unsuccessful ((名词)) 一个不成功的（名词） It was an unsuccessful attempt.
近义词
同义词: failed, fruitless, ineffective; 反义词: successful, triumphant
词源
来自“un-”（不）+“success”（成功）+“-ful”（充满的）。意思是“不充满成功的”。
记忆技巧
把它分解成“un-success-full”。把它理解为“不（un）充满（full）成功（success）”，意思就很清楚了。