Almost all amino acids that make up biological proteins, for instance, are left-handed, so a self-replicating biological molecule of right-handed chirality could be suggestive of an alien organism.

比如说，几乎所有构成生物蛋白的氨基酸都是左手性的，所以出现右手手性的自我复制生物分子可能意味着发现了外星生物体。

youdao

Alien life, he will suggest, is almost certain to exist in many other parts of the universe: not just in planets, but perhaps in the centre of stars or even floating in interplanetary space.

他认为，外星生物，几乎肯定存在于宇宙的某个角落，不光是在行星上，还有可能存在于恒星的中心，甚至漂浮在星际空间。

youdao

Given the daunting distances between the stars, the real-life version will almost certainly be a lot less sensational than the movies depicting alien invasions or crash-landing spaceships.

考虑到星际之间令人畏惧的路程，真实生命的说法将几乎必然较之于电影中所描绘的外星人入侵或紧急降落的太空飞船要带来更少的耸人听闻的轰动效应。

youdao

Others regard Leeds, with its strong financial sector and service industries, as almost as alien as London.

ECONOMIST: The North-East

This free-for-all is almost as alien to the better educated, more law-abiding, Sunni citizens of Taiz, the most urbanised region in the north, or Hodeida, its main port, as it is to the southerners.

ECONOMIST: Yemen

In it, he claimed that intelligent alien life almost certainly exists and that the search for it is valuable.

CNN: Should we fear space aliens?