Incest is sex between people who are too closely related in a family — for example a parent and a child, or a brother and a sister. Almost every society treats this as a very serious wrong, and in most places it is also against the law.

Incest亂倫 is是 sex between people who are too closely related in a family指家庭裡關係太近的人之間發生性行為——for example a parent and a child例如父母和子女，or a brother and a sister或是兄弟姊妹之間。Almost every society幾乎每個社會 treats this as a very serious wrong都把這件事看成非常嚴重的錯事，and in most places而且在大部分地方 it is also against the law這也是違法的。

The word is a noun. You meet it in news, law, and serious books; it is not a casual word, and it is not a kind joke.

The word這個字 is a noun是名詞。in news, law, and serious books在新聞、法律，還有嚴肅的書裡，You meet it你會遇到它；it is not a casual word它不是一個隨便的字，and it is not a kind joke也不是什麼善意的玩笑。

Though actually, you will also see the adjective incestuous. Sometimes that still means this sexual crime.

Though actually不過其實，you will also see the adjective incestuous你也會看到形容詞incestuous。Sometimes that still means this sexual crime有時候它指的還是這種性犯罪。

Sometimes writers stretch it: they call a small industry or a circle of friends incestuous when the same people keep hiring each other and nobody new gets in. That second use is figurative and a bit sharp about the group; it does not mean those people are having sex. Both uses are real, so read the sentence before you decide.

Sometimes有時候 writers stretch it作家會把這個字用得更寬：they call a small industry or a circle of friends incestuous他們會用incestuous來形容一個小產業或一個朋友圈，when the same people keep hiring each other and nobody new gets in意思是同一批人一直互相聘用彼此、沒有新人能加入。That second use第二種用法 is figurative and a bit sharp about the group是比喻用法，對那個圈子帶點尖銳的批評；it does not mean those people are having sex並不是說那些人有性關係。Both uses are real兩種用法都是真實存在的，so read the sentence before you decide所以要先讀懂句子的意思再判斷。

English borrowed the word from Latin. An older native English word was pushed out.

English英文 borrowed the word from Latin是從拉丁文借來這個字的。An older native English word一個比較舊的英文本土字 was pushed out就被取代掉了。