Dictionary entry
prophylactic device
noun
预防装置
a device used to prevent disease or infection, such as a condom
常指避孕套等预防疾病的器具
- 1.
an agent or device intended to prevent conception
In use
Before engaging in sexual activity, it is important to use a prophylactic device to reduce the risk of STIs.
The electrician recommended a prophylactic device to protect the computer from power surges.
In the laboratory, scientists wear a prophylactic device such as a face shield to prevent chemical splashes.
use a prophylactic device
正式语境常用。
You should use a prophylactic device to prevent infection.
你应该使用预防装置来防止感染。
a prophylactic device for [purpose]
for 表示用途。
This is a prophylactic device for dental protection.
这是一种用于牙齿保护的预防装置。
wear a prophylactic device
wear 常与防护类装置搭配。
Workers must wear a prophylactic device in hazardous areas.
工人在危险区域必须佩戴预防装置。
Common mistakes
He bought prophylactic device.He bought a prophylactic device.
可数名词短语需要不定冠词或定冠词，汉语中缺少冠词概念导致遗漏。
There are many prophylactic device.There are many prophylactic devices.
可数名词复数需要加-s，汉语没有复数形态变化导致错误。
Connections
Confusing words
- prophylactic
- 预防性的 · prophylactic 是形容词，意为‘预防性的’，而 prophylactic device 是名词短语，特指避孕装置。混淆时学习者可能错误地用形容词代替名词短语。
- contraceptive
- 避孕药/避孕器具 · contraceptive 泛指所有避孕方法（包括药物和器具），而 prophylactic device 特指物理避孕装置（如避孕套、宫内节育器等）。二者在指称范围上不同。
Learner notes
Grammar Note
名词短语，可数
Dictionary facts from ECDICT, WORDNET.