unusual相关的词根或词缀是: usutil

This was a highly unusual action .

这是极其不寻常的举动。

Has anyone expressed unusual concern about your driving ?

有没有人对你的驾驶技术表达出异常的担忧？

Interest in that extends to some unusual places .

此病毒涉及到一些异乎寻常的地区。

I don 't anticipate anything unusual on december 21 .

我预测12月21日不会发生任何反常的事。

The federal reserve is due to hold an unusual two-day meeting beginning on september 20 .

美联储将于9月20日召开一次为期两天的特别会议。