drastic

他体重的急剧下降让所有人都感到惊讶。

His ___drastic weight loss surprised everyone.

如果情况恶化，我们可能需要采取严厉行动。

If the situation worsens, we might need to take ___drastic actions.

政策的突然转变对公司的运营产生了剧烈的影响。

The sudden policy shift had a ___drastic impact on the company's operations.