He created RACES of alien creatures, such as the Mercurian Harmoniums, a species of paper-thin extra-terrestrials who lived on sound.

他创造出一系列外星生物，诸如水星人哈摩里斯，一种以声音为食、身体薄如纸片、生活在大气圈外的物种。

youdao

Did Sir Arthur believe in extra-terrestrials?

阿瑟爵士相信外星人吗？

youdao

The physicist Enrico Fermi famously asked why no extra-terrestrials have shown up on Earth when there are likely to be so many solar systems where life could have evolved.

物理学家恩里克·费米曾提出一个著名的问题：既然宇宙中有着海量的恒星系，其中有条件演化出生命的也为数不少，然而为什么到目前止还没有任何一个地外文明向地球人展示它们的存在？

youdao

Like so many refugees the extra terrestrials orb into our country at the East River and are greeted by the Statue of Liberty.

FORBES: Meryl Streep, Female Symbols and The National Women's History Museum

EXTRA-TERRESTRIALS and a pensive chihuahua partly explain the success of two of Japan's consumer-finance firms.

ECONOMIST: Japanese consumer finance

My guess is as good as anyone's (well, perhaps not those who think it was the work of extra-terrestrials).

BBC: The perfect trip: Egypt