Definition
To be remarkably effective or successful, often in a way that is surprisingly quick or easy.
十分奏效（帶驚喜）
This method worked like a charm for me; I wish I had known about it sooner.
這個方法對我來說非常有效；我真希望早點知道它。
I tried everything, but only this little trick worked like a charm.
我試了各種方法，但只有這個小技巧非常有效。
She tried drinking hot tea in the morning to soothe her sore throat, and it worked like a charm.
她早上喝熱茶來舒緩喉嚨痛，結果非常有效。