itch

Compared meaning: a strong desire to do something (noun).

比较义项：做某事的强烈愿望或冲动（名词）。

• urge

  A strong, often sudden impulse or need to do something; it can be physical or emotional, with a neutral to formal register suited to many contexts.

  指一种强烈、常常突然产生的冲动或需求，可以是生理上或情感上的，语气中性或正式，适用于多种场合。

  He felt a strong urge to call his mother after the accident.

  事故发生后，他产生了一种强烈的冲动，想给母亲打电话。

• itch 本词

  An informal, lighter noun for a restless desire that builds up over time, especially to travel, change jobs, or try something new; less serious than urge.

  是一个较为口语化、语气较轻松的名词，指随着时间积累而产生的、挥之不去的渴望，常指想旅行、换工作或尝试新事物的冲动，语气不如urge那样严肃。

  After years in the same job, she got an itch to try something new.

  在同一份工作做了多年后，她萌生了想尝试新事物的渴望。

Urge and itch both can mean a strong desire to do something. Urge is neutral or formal, a sudden strong impulse that can be physical or emotional. Itch is informal and lighter, a restless desire that builds up over time, especially to travel.

两者都可以指做某事的强烈愿望，但urge语气更中性或正式，指突然而强烈的冲动，可用于生理、情感等多种场合；itch作名词时较为口语化，通常指随时间积累而产生的、比较轻松俏皮的渴望，例如想旅行或换工作的冲动。这里不比较itch的动词义“发痒”，也不比较urge的动词义“力劝、催促”。