The improper use of medicine could lead to severe adverse reactions.

用药不当会引起严重的不良反应。

《柯林斯英汉双解大词典》

The aim of the agreement was to prevent the improper use of the country's bank secrecy laws, and its effect was to curb severely the system of secrecy.

该协议的目的是防止人们不恰当地使用该国的银行保密法规，它的效果是严厉遏制保密制度。

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In recent years, numerous companies have been sued over the improper use of GPL software.

近些年来，大量的公司因为不恰当地使用GPL软件而受到控告。

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Phoenix defends its practices and says it will continue to fight what it sees as the improper use of life-insurance policies.

WSJ: Fortress and Phoenix in Battle Over Death Bets

While the grave dancers seized on the memo as evidence that Corzine was not only aware, but complicit, in the improper use of customer funds, the reality may be more complex.

FORBES: Lawmaker Raises Specter Of Enron In MF Global Hearing, Edith O'Brien Takes The Fifth

Because that risk is not passed on to pension beneficiaries (their benefits are guaranteed, whatever the market does) it is improper to use a liability discount rate that includes the risk premium.

FORBES