泄气用英语怎么说

despair;
feel like giving up
lose heart
例句
虽然失败不只一次,他没有泄气.
Though he lost again and again ,he didn't lose heart

泄气？=气体泄露？还是指人泄气？
Air leak泄气：气体泄露
discouraged 指人

despair
feel like giving up
lose heart

1.to feel discouraged; to lose heart; to be disheartened; to be disappointed; to be frustrated
2.disappointing; frustrating; discouraging

Air leakage