To know which scenario was correct, the researchers needed to find a transitional form — with characteristics that fall somewhere between bottom-dwellers and the permanently 'rafting' janthinids.

为了研究出哪种猜想是正确的，研究人员需要找到过渡类型，既有底栖蜗牛的特性也有漂浮泡泡蜗牛的特征。

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When anchoring, holding ground refers to the bottom and its characteristics.

在下锚时，holding ground指的是水底的地面以及它的性质。

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One important characteristics of China's traditional culture of law is to restrict and humiliate merchants, keeping them at the bottom of the four social strata.

通过法律困辱商人，使其居于四民之末，是中国传统法律文化的一个重要特征。

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The reverse head-and-shoulders bottom formation has several well-identified characteristics that allow the investor to clearly determine not only the entry point, but also the stop and profit target.

FORBES: The Dominant Chart Pattern of Early 2012