1. Turning up the ends of small poles, or using knees of timber instead of straight pieces, and grooving them together, or filling up the interstices between them, in some way, so as to make them water-tight, he brings his rude raft literally into ship-shape.
如果将带有小孔的两端向上翘起，或者使用肋材而不是笔直的本板，并且通过开槽将肋材拼在一起，或者用某种填料将其空隙封起使其不透水，那么他也就把粗陋的木筏变成了名副其实的船体了。
2. When railroad lines run over swampy or unstable ground, they are sometimes supported by layers of timber and smaller pieces of wood that form a sort of raft on which the ballast and tracks are placed.
铁道线路过沼泽或者土壤不稳定的地带时，人们有时还用原木和小块的木材修成木筏一样的结构，再在上面铺道碴和轨道。