| 单词 | sheaths |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔sheath〕The nerves are protected by thin sheaths of fatty tissue.神经由薄薄的脂肪鞘保护着。剑桥高阶〔synovia〕A clear, viscid lubricating fluid secreted by membranes in joint cavities, sheaths of tendons, and bursae.滑液：一种清澈、粘质、有润滑作用的体液，从关节腔、腱鞘和粘液囊的粘膜处分泌美国传统The nerves are surrounded and protected by thin sheaths of fatty tissue.神经是由薄薄的脂肪组织层所包围和保护的。剑桥国际 |
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