Yin is the English spelling of Chinese 陰. In Chinese thought it names one of the two forces that together make up everything: yin is the quiet, dark, cool, still, receiving, inward side, and yang is the bright, warm, active, moving, outward side.

Yin is the English spelling of Chinese 陰Yin 就是中文「陰」的英文拼法。 In Chinese thought在中國的思想裡 it names one of the two forces that together make up everything它指的是共同構成萬物的兩股力量之一: yin is the quiet, dark, cool, still, receiving, inward sideyin 是安靜、黑暗、涼、靜止、接受、向內的那一面, and而 yang is the bright, warm, active, moving, outward sideyang 則是明亮、溫暖、主動、活動、向外的那一面。

English books usually describe yin as "female" and "negative", but be careful — "negative" here does not mean bad, and yin is not weakness. It is the other half of a pair, and the whole idea is that neither can exist alone and each is already turning into the other.

English books usually describe yin as "female" and "negative"英文書通常把 yin 形容成「女性」和「negative」, but不過 be careful要小心 — "negative" here does not mean bad這裡的 "negative" 不是指不好, and而且 yin is not weaknessyin 也不代表軟弱。 It is the other half of a pair它是一對的另一半, and而且 the whole idea is that neither can exist alone and each is already turning into the other整個概念是兩者缺一不可，而且彼此已經在互相轉化之中。

In everyday English the pair almost always travels together as "yin and yang", used loosely to mean two opposite things that balance each other: "They are the yin and yang of the office — she plans, he improvises." People also talk about "the yin and yang of" a situation to mean its two sides.

In everyday English在日常英文裡 the pair almost always travels together as "yin and yang"這一對幾乎總是一起出現，說成 "yin and yang", used loosely to mean two opposite things that balance each other用來鬆散地指兩個互相平衡的對立事物: "They are the yin and yang of the office — she plans, he improvises."像 "They are the yin and yang of the office — she plans, he improvises."（他們是辦公室裡的陰陽——她負責規劃，他負責隨機應變）。 People also talk about "the yin and yang of" a situation to mean its two sides人們也會說某個情況的 "the yin and yang of"，指它的兩個面向。

On its own, yin appears mostly in writing about Chinese medicine, feng shui and philosophy — "a yin food", "yin energy" — and in yoga, where "yin yoga" is the slow kind with long, still poses. It has no plural and takes no a: you say "more yin", not "a yin".

On its own單獨使用時, yin appears mostly in writing about Chinese medicine, feng shui and philosophyyin 大多出現在中醫、風水和哲學相關的文章裡 — "a yin food", "yin energy"像 "a yin food"（陰性食物）、"yin energy"（陰的能量） — and而且 in yoga在瑜珈裡, where "yin yoga" is the slow kind with long, still poses"yin yoga"（陰瑜珈）就是動作緩慢、姿勢維持很久的那種。 It has no plural and takes no a它沒有複數形式，也不加 a: you say "more yin", not "a yin"你會說 "more yin"，而不是 "a yin"。

Separately, in Scottish speech "yin" is a completely different word meaning "one" — "the wee yin", the little one.

Separately另外, in Scottish speech在蘇格蘭口語裡 "yin" is a completely different word meaning "one""yin" 是完全不同的字，意思是「one」（一個） — "the wee yin", the little one像 "the wee yin"，指小的那個。