vain
US /veɪn/
UK /veɪn/
1.
自负的, 徒劳的
having or showing an excessively high opinion of one's appearance, abilities, or worth
:
•
She is so vain that she spends hours looking at herself in the mirror.
她太自负了，花好几个小时照镜子。
•
His vain attempts to impress her failed.
他徒劳的努力未能打动她。
2.
徒劳的, 无用的
producing no result; useless
:
•
All their efforts were in vain.
他们所有的努力都白费了。
•
It was a vain attempt to escape.
那是一次徒劳的逃跑尝试。