单词 | 帮助保持 |
释义 | DEFINITIVE EXAMPLES 权威例句As worms move through soil they help to maintain its fertility.当蚯蚓在土壤中蠕动时,可帮助保持土壤的肥力。剑桥国际Their skin produces a slime that helps to keep it moist. 它们的皮肤产生一种黏液,帮助保持皮肤润湿。译典通 |
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