increasing at a very fast rate and not able to be controlled 快速增长的；失控的◆fighting runaway inflation 对抗失控的通货膨胀◆The company is trying to cope with runaway demand for its product. 这家公司正努力满足对其产品快速增长的需求。⨁runaway costs / inflation / prices 快速增长的成本／通货膨胀／价格
very successful 遥遥领先的；巨大的；非常成功的◆The book was a runaway best-seller. 这是一本非常抢手的畅销书。◆Their new product has proved to be a runaway success. 他们的新产品大获成功。⨁a runaway best-seller / hit / success / winner 抢手的畅销书；风靡的热点；巨大的成功；非常成功的赢家