Mutual【adj.】

1. felt or done by two or more people or groups in the same way相互的，彼此的

Mutual respect is essential for a healthy relationship.

相互尊重对于健康的关系至关重要。

● mutual understanding

a shared comprehension or sympathy between two or more people相互理解

● mutual benefit

an advantage or profit that is shared by two or more parties互惠互利

2. shared by two or more people or groups共同的，共有的

The mutual goal of the team was to win the championship.

团队的共同目标是赢得冠军。

● mutual agreement

an agreement that is made by two or more parties equally共同协议

● mutual friend

a person who is a friend to two or more people共同的朋友

—> neutral【adj.】

1. not supporting or helping either side in a conflict, disagreement, etc.; impartial中立的，不偏不倚的

Switzerland remained neutral during World War II.

瑞士在第二次世界大战期间保持中立。

2. having no strongly marked or positive characteristics or features无明显特征的，中性的

She chose a neutral lipstick color for everyday wear.

她选择了一款适合日常使用的中性口红颜色。

3-1. not electrically charged不带电的

3-2. having a pH value of 7; neither acid nor alkaline中性的（pH值为7，既非酸性也非碱性

3-3. (of a vowel or syllable) pronounced with the tongue relaxed and in a central position in the mouth（元音或音节）中性的，舌位居中的

The schwa sound is a neutral vowel sound in English.

英语中的非重读央元音是一种中性元音。