Word · Frequency #23677
chaff
谷壳；糠
The dry outer covering of grain seeds and the plant pieces separated from them during threshing.
- 1.
The inedible parts of a grain-producing plant.
谷物植物不可食用的部分
- 2.
material consisting of seed coverings and small pieces of stem or leaves that have been separated from the seeds
由种子外壳和从种子中分离出来的小茎或叶片组成的物质
- 3.
Straw or hay cut up fine for the food of cattle.
切碎的稻草或干草,用作牛饲料
- 4.
foil in thin strips; ejected into the air as a radar countermeasure
薄片状箔条；作为雷达对抗措施释放到空中
- 5.
Any excess or unwanted material, resource, or person; anything worthless.
多余或不需要的材料、资源或人；无价值的东西
- 6.
Light jesting talk; banter; raillery.
轻松的玩笑；打趣；戏谑
- 7.
Loose material, e.g. small strips of aluminum foil dropped from aircraft, intended to interfere with radar detection.
干扰雷达的散装材料
雷达干扰箔条；箔条干扰物；废物；无价值的东西；铡碎的干草；碎草料；玩笑；打趣；谷物植物不可食用的部分
In use
The farmer separated the chaff from the grain using a winnowing fan.
Military aircraft release chaff to confuse enemy radar.
In his speech, he warned against paying attention to the chaff of rumors.
Connections
Collocations
- separate the wheat from the chaff
- 去芜存菁；甄别优劣
- The screening test helps separate the wheat from the chaff.筛选测试有助于去芜存菁。
- chaff cutter
- 铡草机；切草机
- The farmer used a chaff cutter to prepare feed for the cattle.农场主用铡草机为牛准备饲料。
- radar chaff
- 雷达干扰箔条
- The aircraft released radar chaff to confuse the incoming missile.飞机释放雷达干扰箔条以迷惑来袭导弹。
- wheat chaff
- 麦糠；麦壳
- A strong breeze carried the wheat chaff away from the grain.一阵强风把麦糠从麦粒中吹走了。
Idioms & figurative uses
- separate the wheat from the chaff
- 区分优劣；去芜存菁The first round of interviews helps us separate the wheat from the chaff.
Learner notes
Memory Tip
谷壳轻飘飘，脱粒时被风吹散——chaff就是被抛弃的壳；雷达抛出的箔条也叫chaff，同样是撒出去没用的。
Context & Register
语域：mixed 常见场景：农业或谷物加工、军事或航空雷达对抗、日常口语中的玩笑或比喻 chaff 作名词时含义较多：农业上通常指谷壳、糠或切碎的干草；军事和航空领域多用于指雷达干扰箔条；在日常口语中也可比喻无价值的东西，或表示轻松的玩笑。整体语域因语境而异，既有中性/正式的科技用法，也有口语化的比喻用法，因此标为“混合”。
Grammar Note
通常不可数，但复数形式chaffs可用于指不同种类。
Pronunciation & Spelling
发音以美式英语为准。chaff /tʃæf/ 与 staff /stæf/、half /hæf/、laugh /læf/、graph /ɡræf/、giraffe /dʒəˈræf/ 都押 /æf/ 韵（尽管拼写不同）。注意 cuff /kʌf/ 虽形似，但发音为 /ʌf/，与 stuff /stʌf/ 押韵，不押 /æf/ 韵。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.