fragility

经历了这场打击后，他情绪上的脆弱性变得很明显。

After this setback, his emotional ___fragility became quite apparent.

玻璃易碎，必须轻拿轻放。

The ___fragility of the glass means you must handle it very carefully.

这个生态系统的脆弱性在气候变化面前暴露无遗。

The ___fragility of this ecosystem becomes evident in the face of climate change.