indescribably
adv. 难以形容地;不明确地
例句
It tasted indescribably bland and insipid, like warmed cardboard.
这东西尝起来太淡而无味了,就像加热过的纸板一样。
《柯林斯英汉双解大词典》
After listening to my words, my father indescribably happy.
听了我的话,爸爸别提有多开心了。
The mood was light and defined by an indescribably strong air of unity.
氛围是轻松的,空气中充满着无法形容的团结气氛。