| 单词 | 细胞外 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔bursa of Fabricius〕A thymuslike lymphoid gland in birds that is an outgrowth of the cloaca and the site of B cell maturation.盲腺囊：鸟体内类似胸腺的粘液腺，是泄殖腔和成熟的囊依赖细胞外的生成物美国传统〔exoenzyme〕An enzyme, such as a digestive enzyme, that functions outside the cell from which it originates.外酶：酶的一种，如消化酶，在细胞外发生作用美国传统〔fiber〕Any of the filaments constituting the extracellular matrix of connective tissue.纤维组织：构成结缔组织的细胞外基质的丝状体之一美国传统In the picture, you can clearly see that each cell is surrounded by a membrane and also that every cell contains a nucleus.在图中，你可以清晰地看到每个细胞外面都有细胞膜包裹，中间都包含有细胞核。剑桥国际 |
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