inert

氩气是一种惰性气体，不会与其他物质发生反应。

Argon is an ___inert gas that doesn't react with other substances.

病人手术后躺在床上一动不动。

The patient lay ___inert in bed after the surgery.

听到这个令人崩溃的消息后，他在椅子上呆坐了好几个小时。

After hearing the devastating news, he sat ___inert in his chair for hours.