| 单词 | sieve-tube |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔companion cell〕A specialized parenchyma cell, located in the phloem of flowering plants and closely associated in development and function with a sieve-tube element.伴细胞：一种特殊的软组织细胞，位于开花植物的韧皮部，生长和功能与筛管要素密切联系美国传统 |
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