Markus Ribbe, a scientist at the University of California-Irvine, says in a new paper that the enzyme could be further tweaked to make longer carbon chains than those that make up propane.

美国加州大学欧文分校的科学家马库斯•里贝在自己新撰写的文章中介绍说，这种酶可以被进一步修改，届时能转化出比丙烷更长的碳链。

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But he continued to visit the mountaintop where the men were buried, until he could no longer make the climb.

VOA: special.2009.11.24

Whereas in the linear case, I make it ten times bigger, it takes ten times longer to run. OK.

它要占用原来十倍的时间去运行，我一直在说还有一件事情没有讲，这是我要强调的最后一件事。

麻省理工公开课 - 计算机科学及编程导论课程节选

who I'm no longer living in the same area as or use it to kind of make plans with some friends.

联系那些和我不住在一个地方的朋友或用它和一些朋友们定定计划。

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But worries about growth in the short run make nations reluctant to make longer-term moves.

WSJ: G-20 Defers Key Decisions on Aid to Europe

That gives the little strips of steel rigidity, and it also makes it possible for the strips to be overlapped to make longer pieces.

FORBES: Boy toy

YouTube is ready to entice viewers to make longer commitments.

FORBES: YouTube's New Design Wants You To Lean Back