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a harvester
harvester 指人时，意为“收割者、收获者”。
A harvester helps gather the harvest.
收割者帮助收获庄稼。
收获者；收割庄稼的人
先理解核心含义，再看它在真实句子里的用法。
收获者；收割庄稼的人
a person who helps to gather the harvest
A harvester helps gather the harvest.
收割者帮助收获庄稼。
收割机,收割作物的机器。
A machine that gathers the harvest (harvests the crop).
一种重型林业车辆,用于定长伐木作业中的伐木、去枝和截断；此类车辆的一台。
A type of heavy forestry vehicle employed in cut-to-length logging for felling, delimbing and bucking trees; an instance of this type.
从数据源收集数据的程序或算法。
A program or algorithm that gathers data from a source.
一种北美蝴蝶,学名Feniseca tarquinius,其幼虫以蚜虫为食,是北美唯一完全食肉的毛虫；该物种的一只。
A North American butterfly species, Feniseca tarquinius, whose larvae eat aphids and are the only entirely carnivorous caterpillars in North America; an individual of this species.
Every autumn, the harvesters work from sunrise to sunset in the wheat fields.
每年秋天，收割庄稼的人们从日出到日落都在麦田里劳作。
The farmer hired a team of harvesters to help bring in the rice before the rain.
农民雇了一队收割庄稼的人，赶在下雨前把水稻收进来。
The young harvester tied the wheat into bundles by hand.
这个年轻的收割庄稼的人用手把小麦捆成了捆。
harvester 指人时，意为“收割者、收获者”。
A harvester helps gather the harvest.
收割者帮助收获庄稼。
harvester 指机器时，意为“收割机”。
The harvester is cutting the wheat.
收割机正在收割小麦。
Not this
There are many harvester in the field.
Use this
There are many harvesters in the field.
harvester 是可数名词，在 many 后面必须用复数形式 harvesters。
Not this
We bought a new harvest for the farm.
Use this
We bought a new harvester for the farm.
harvest 是名词/动词，表示“收获”或“收割”；harvester 才是表示“收割机”或“收获者”的名词。这里指的是机器，所以要用 harvester。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
联合收割机
The combine harvester cut the wheat in one pass.
联合收割机一次就割完了小麦。
机械收割机
Mechanical harvesters have replaced many field workers.
机械收割机取代了许多田间工人。
小麦收割机
A wheat harvester can clear a large field quickly.
小麦收割机能很快收完一大片田地。
棉花收割机
The cotton harvester picked the bolls without damaging the plants.
棉花收割机采摘棉铃，不损伤植株。
悲伤的收割者
In Metallica's song "Harvester of Sorrow", the chorus repeats the phrase "Harvester of sorrow".
在Metallica（金属乐队）的歌曲《Harvester of Sorrow》中，副歌重复了“Harvester of sorrow”这句歌词。
Use harvester naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
harvest 是“收割”，-er 表示“…的人/机器”，所以 harvester 就是收割庄稼的人或收割机。
语域：neutral 常见场景：农业、收割作业、文学或正式叙述 ‘harvester’ 通常为中性词。指‘收割机’时常见于农业或机械相关场合；指‘收割庄稼的人’时多用于书面或文学描述，日常口语中较少单用这个词。
harvester 既可指收割庄稼的人，也可指收割机，需根据上下文判断。
Dictionary facts from ECDICT, WIKTIONARY.