Methods: Double ratio dilution method by physiological saline was applied to different type of Vibrio cholera, and their growth on gentamicin AGAR plate was observed.

方法：采用稀释法用生理盐水将不同型别的霍乱弧菌进行倍比稀释，观察其在庆大霉素琼脂平皿上的生长情况。

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Even in 2030, Greek sovereign debt would still be 130% of GDP - double the ratio that most would argue is a sensible, sustainable ratio of debt to GDP.

BBC: Greece needs yet another bailout

According to Vickers Insider Report, near the market high in September insiders were selling heavily into the market strength, with the insider sell-to-buy ratio just about double its average sell ratio of the last ten years.

FORBES: Housing And Autos Driving U.S. Economy Higher

Aside from the surprise profit and dividend cuts, the company also reported a net debt-to-equity ratio of 61%, double that of last year because of new loans, though Wu says much of that is for project financing.

CNN: HANGING ON AT HOPEWELL