Locus is a formal word for the place where something is found, or where it is strongest — the centre of it. A city can be the locus of a protest; a market can be the locus of an outbreak.

LocusLocus is a formal word for the place where something is found是一個正式的字，指某件事所在的地方，or where it is strongest或是它最強烈的地方——the centre of it也就是它的核心。A city can be the locus of a protest一座城市可以是一場抗議的locus；a market can be the locus of an outbreak一個市場可以是一場疫情爆發的locus。

Everyday English prefers place, centre, or spot.

Everyday English prefers place, centre, or spot日常英文比較常用place、centre，或spot。

Scientists keep extra senses: in genetics, a locus is the exact spot on a chromosome where a gene sits; in maths, a locus is the set of points that fit a rule, like every point the same distance from a centre. You will meet those in textbooks more than in chat.

Scientists keep extra senses科學家保留了額外的意思：in genetics, a locus is the exact spot on a chromosome where a gene sits在遺傳學裡，locus是一個基因所在的染色體上的確切位置；in maths, a locus is the set of points that fit a rule在數學裡，locus是符合某個規則的所有點的集合，like every point the same distance from a centre像是所有跟一個中心點距離相同的點。You will meet those in textbooks more than in chat你會在教科書裡碰到這些用法，比在聊天裡多。

The word was borrowed from Latin locus, “place.” Do not confuse it with locust, the insect — they look alike on the page and are not the same word.

The word was borrowed from Latin locus, "place."這個字借自拉丁文locus，意思是"place"（地方）。Do not confuse it with locust, the insect不要把它跟昆蟲locust搞混——they look alike on the page and are not the same word它們寫出來很像，但不是同一個字。