在他去世后，她变得有些精神失常。

After his death, she became slightly ___unbalanced.

许多无家可归者精神失常，一些人沉迷于化学物质。

Many homeless people are mentally ___unbalanced, some are addicted to chemical substances.

持续的压力让他感到情绪上不稳定。

The constant stress left him feeling emotionally ___unbalanced.