the lone doctor in the entire county; a lonesome pine; an only child; the sole heir; the sole example; a solitary instance of cowardice; a solitary speck in the sky.

• 在整个县中唯一的医生；一棵寂寞的松树；唯一的继承人；独一无二的例子；懦弱的唯一例子；天空中唯一的斑点。