Railway freight volumes are influenced by multiple factors, and the action mechanisms of these factors are usually unable to be described with accurate mathematical linguistic forms.

但是，铁路货运量受多种因素影响，且各因素的作用机制通常不能或无法用精确的数学语言来准确描述。

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One recent weapon is what frog-busters are calling a "hot shower chamber, " a modified freight container used by nurseries to ship plants, with multiple heads that spray heated water onto the plants and kill any coquis that might be lurking there.

WSJ: When It Gets Too Noisy in Paradise, They Call the Frog Whisperer