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1·The new PNAS study also sheds light on the difference between meaning and happiness, but on the biological level.

新的 PNAS 研究也揭示了意义和幸福之间的差异，但只是在生物学层面上。

2·The research was published in PNAS.

这项研究发表在《美国科学院院刊》（PNAS）上。

3·The PNAS study appears to support his view.

PNAS的研究似乎支持他的看法。

4·The findings are published this week in the journal PNAS.

该发现发表在本周杂志PNAS上。

5·The findings have been published in the medical journal PNAS.

这一发现已在美国国家科学院院刊（PNAS）上发表了。

6·The study will appear in the print edition of PNAS on January 2.

这项研究将会刊登在一月二日出版的《美国国家科学院院刊》的印刷版本中。

7·PNAS. Dark red is an increase of 0.3 millimeters per day; dark blue, a decrease of 0.3 millimeters.

美国国家科学院院刊.深红代表每天0.3毫米的增长；深蓝代表0.3毫米的下降。

8·Thus, it is possible to significantly suppress nonsense mutations within target genes using antisense PNAs.

由此可见，反义pna有可能在靶基因区域显著性抑制无义突变。

9·The unnatural backbone of PNAs also means that PNAs are particularly resistant to protease and nuclease degradation.

PNA的非天然骨架也使得PNA能有效对抗蛋白酶和核酸酶的降解。

10·But in the Arctic, another feedback may stabilize the ice, wrote Max Planck Institute meteorologist Dirk Notz in PNAS.

然而，马克斯·普朗克研究所的气象学家德克·诺茨在《美国国家科学院学报》撰文，说北极的冰盖是稳定的。