hollowness
n. 空泛,空虚
例句
One month before the deadline we see the hollowness of these promises.
截止期限前一个月我们看出了这些承诺的空洞性。
《柯林斯英汉双解大词典》
Feel the hollowness inside of your heart.
感受到你内心的空虚。
I think it is the feeling of lose and hollowness.
我想应该是失落和空虚的感觉吧。