| 单词 | 底物 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔substratum〕The material on which another material is coated or fabricated.底物：被另一物质覆盖的物质美国传统〔yield up〕The shallow sea bed yields up an abundance of food.浅层海底物产丰饶。外研社新世纪A dredger is a boat or a device which is used to dredge rivers.挖泥机是用来挖掘或捞取河底物质的船或机器。剑桥国际 |
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