在连续的场合
以上为机器翻译结果，快速获取精准的人工翻译结果，建议选择有道人工翻译
逐次情况抽样
We have also shown that humans tried to settle in Britain at least eight times, but on seven of those occasions they subsequently perished as Britain was hit by successive ice advances.
BBC: Piltdown skull Image: Natural History Museum/
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。