通过改变前体mrna的切割位点和聚腺苷酸化位点而从一个编码区产生不同大小mrna的能力。
The ability to make mRNAs of varying sizes from one coding region, by altering the site of pre-mRNA cleavage and polyadenylation.
从前有一位切石匠，他每天都会来到一座大山旁边的巨石前，切割下一块块的石板用以制作石碑或建造房屋。
Once upon a time there lived a stone-cutter who went every day to a great rock in the side of a big mountain and cut out slabs for gravestones or for houses.
在切割后的最初估值中，技术组的一位专家在查看了海底传回的视频后给出了至少每天12,000至25,000桶的保守估计。
In its first estimate since the cut, one of the technical group's teams, looking at video feeds from the sea floor, offered a conservative estimate of at least 12,000 to 25,000 barrels a day.
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