| 单词 | raft |
| 释义 | raft [raft] ENGINEERING A quantity of timber or lumber secured together by means of ropes, chains, or rods and used for transportation by floating. GEOLOGY 1. A rock fragment caught up in a magma and drifting freely, more or less vertically. 2. See <<float coal>> HYDROLOGY An accumulation or jam of floating logs, driftwood, dislodged trees, or other debris, formed naturally in a stream by caving of the banks. |
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