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Comprehensive English-Chinese Dictionary

cocoon [kə'kun] [kə'kuːn]
  1. 1. noun 茧,蚕茧
  2. 2. noun 茧状物(如蜘蛛水蛭等的卵袋,蚯蚓等的土房
  3. 3. noun 运输保存军事装备用的)塑料披盖防护喷层防水层

Collins English-English Dictionary

cocoon [kə'kuːn]
  1. 1. n a silky protective envelope secreted by silkworms and certain other insect larvae, in which the pupae develop
  2. 2. n a similar covering for the eggs of the spider, earthworm, etc
  3. 3. n a protective spray covering used as a seal on machinery
  4. 4. n a cosy warm covering
  5. 5. vt. [tr] to wrap in a cocoon
  6. 6. vt. [Etymology] C17: from French cocon, from Provençal coucoun eggshell, from coco shell, from Latin coccum kermes berry, from Greek kokkos grain, seed, berry; compare coccus

Examples

Families cocoon around the TV set most evenings.
好多家庭大部分晚上都围在电视机前看电视。
这是蚕结的茧。
It's a silkworm cocoon.
杭州盛产茧丝制品,被誉为丝绸之乡。
As a city teeming with products made of cocoon silk, Hangzhou is titled the hometown of silk.
丝素是茧丝的成分之一。
Fibroin is a component of cocoon filament.
蚕茧
silkworm cocoon

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