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a guppy
guppy 是可数名词，单数前需加冠词 a/an。
A guppy is a small freshwater fish.
古比鱼是一种小型淡水鱼。
古比
先理解核心含义，再看它在真实句子里的用法。
古比
a small freshwater fish of South America and the West Indies, often kept in aquariums
A guppy is a small freshwater fish.
古比鱼是一种小型淡水鱼。
一种小型淡水鱼,学名Poecilia reticulata,常见于家庭水族箱；雌鱼体色平淡,尾鳍黑色或深蓝色,雄鱼尾鳍色彩更鲜艳。体型大小不一,雄鱼约4厘米(1.6英寸),雌鱼约7厘米(2.8英寸)。
A tiny freshwater fish, Poecilia reticulata, popular in home aquariums, that usually has a plain body and black or dark blue tail for the females and a more colorful tail for the males. The guppies can vary in size, but males are 4 cm (1.6”) and females are 7 cm (2.8”).
任何微小的鱼。
Any tiny fish.
装入漆弹枪前容纳漆弹的管子。
A tube holding paintballs before they are loaded into the gun.
一种用手掌而非指尖的抓握方式。
A hold across the palm of the hand rather than the fingertips.
I bought a small guppy for the fishbowl in my bedroom.
我买了一条小型孔雀鱼放在卧室的鱼缸里。
These guppies swim around the tank all day and are very active.
这些孔雀鱼整天在水族箱里游来游去，非常活泼。
A guppy will eat almost any tiny food you give it.
孔雀鱼几乎会吃你给它的任何细小食物。
guppy 是可数名词，单数前需加冠词 a/an。
A guppy is a small freshwater fish.
古比鱼是一种小型淡水鱼。
guppies 是 guppy 的复数形式；句首用复数可泛指这类鱼。
Guppies are often kept in aquariums.
古比鱼常被养在水族箱里。
Not this
There are many guppy in the aquarium.
Use this
There are many guppies in the aquarium.
guppy 是可数名词，many 后需用复数形式 guppies，不能保留单数。
Not this
Guppy is a colorful freshwater fish.
Use this
The guppy is a colorful freshwater fish.
guppy 是单数可数名词，不能单独使用；用 the 加单数名词可以泛指整个物种。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
养古比
My daughter wants to keep guppies in her bedroom.
我女儿想在卧室里养古比。
古比鱼缸
You need a small filter for your guppy tank.
你的古比鱼缸需要一个小过滤器。
古比鱼苗
The guppy fry stay near the water surface.
古比鱼苗待在水面附近。
喂古比
Remember to feed the guppies twice a day.
记得每天喂古比两次。
雄性古比
The male guppy has brighter colours than the female.
雄性古比的颜色比雌性更艳丽。
一群古比
A school of guppies darted around the plants.
一群古比在水草周围窜来窜去。
Use guppy naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
古比(guppy)在鱼缸里吐泡泡，字母pp像两个气泡，记住它是南美的小观赏鱼。
语域：neutral 常见场景：aquariums、pet stores 通常为中性词，正式和非正式场合都可用，多用于谈论观赏鱼、宠物店或水族箱等场景，比较常见于日常口语和一般书面语。
guppies
Dictionary facts from ECDICT, WIKTIONARY.