一些预测说，这颗彗星在北半球观察效果最好——至少可以像组成我们熟悉的北斗七星的恒星那么亮。

Some predictions say the comet-best seen from the Northern hemisphere-could be at least as bright as the stars that make up the familiar Big Dipper constellation.

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目的比较外周血淋巴细胞和口腔脱落细胞彗星试验在丙烯腈作业人群遗传损伤评价中的效果。

Objective To compare the effect of Comet assay in peripheral blood lymphocytes and buccal mucosal cells on detecting genetic damage in workers exposed to acrylonitrile (ACN).

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