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He has never travelled to a foreign country .

他从没有到国外旅行过。

Fortunately my mum travelled with me , but I really missed my father and brother .

幸运的是，妈妈还能陪着我一起旅行，但是我十分想念我的父亲和弟弟。

Wherever I have travelled , in america or anywhere else , I have carried a mobile phone .

我无论在何处旅行，比如在美国或其他任何地方，都会随身带着手机。

If you travelled in a time machine back one billion years , you would see many clumps of cells resembling modern cancer tumours .

如果你乘坐时间机器去10亿年前旅行，你会看到很多和肿瘤细胞极其相像的细胞丛。

The day passed happily as they travelled over green hills and along narrow country roads .

然后，他们翻过青山，沿着一条狭窄的乡村小路旅行着，就这样快快乐乐地过了一天。