nice

Compared meaning: pleasant or likeable (adjective).

比较义项：愉快的；讨人喜欢的（形容词）。

• good

  The default, neutral, all-purpose positive word; used almost everywhere, including set phrases like 'good news' or 'good idea', where 'nice' or 'pleasant' would sound unnatural.

  这是最普通、最中性的褒义词，几乎适用于任何场合，也出现在“good news”（好消息）、“good idea”（好主意）这类固定搭配中，这些场合换成nice或pleasant会显得不自然。

  This is good news for the whole team.

  这对整个团队来说是个好消息。

• nice 本词

  Warmer and more casual than 'good'; common in everyday spoken English to describe an agreeable quality or appearance, where 'pleasant' would sound too formal and stiff.

  比good更随和、更口语化，常用于日常口语中形容令人喜欢的品质或外观，这种场合换成pleasant会显得过于正式、生硬。

  Everyone said my new haircut looked really nice at the party.

  大家都说我在聚会上剪的新发型看起来很好看。

• pleasant

  More formal and descriptive than 'good' or 'nice'; typically describes a calm, comfortable sensation - weather, atmosphere, temperament - rather than an opportunity or casual approval.

  比good和nice更正式、更具描述性，通常用来形容平静、舒适的感受，例如天气、氛围或性情，而不是机会或随口的称赞。

  The evening was pleasant, with a cool breeze coming off the lake.

  那天傍晚很宜人，湖面吹来阵阵凉爽的微风。

Good, nice, and pleasant can all mean pleasant or likeable, but differ in formality. Nice is the most casual, common in everyday speech. Good is the neutral, all-purpose word, used almost everywhere. Pleasant is more formal, usually describing a calm feeling, like weather.

这三个词在表示“令人愉快、讨人喜欢”时意思相近，但语气和正式程度不同：nice最随意口语化，good最中性通用，pleasant最正式书面。这里不比较good表示“擅长的”或人品“善良”的用法，也不比较nice表示待人友善、体贴（如“nice of you”，即“你真好心”）的用法。