Heavy rain or saturating rain would lead to drastic decrease of mercury content in soil gas or even to the disappearance of anomalies.

大雨或透雨过后，壤中气汞含量急剧降低，甚至使异常消失；

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Drastic increase or decrease in weight.

体重发生急剧增加或减少的现象。

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When sales leveled off and then decreased during the recession, these private companies saw a drastic decrease in their top lines.

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To begin, maybe women who don't work outside the home are less likely to get divorced because of the drastic decrease in standard of living that comes when an "unskilled" worker tries to enter the workforce.

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