The framework and the lee-board, if any, of a berth should be of approved material, hard, smooth, and not likely to corrode or to harbour vermin.是什么意思_The framework and the lee-board, if any, of a berth should be of approved material, hard, smooth, and not likely to corrode or to harbour vermin.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句