become hollow
那些日子都会变得空洞 The days would all be empty
当我们重复使用同样的表扬时，它可能会变得空洞，不再被孩子重视。
When we use the same praise repeatedly, it may become empty and no longer valued by the child.
youdao
没有幸福，生活将变得空洞无意。
Without it, life will be empty and meaningless.
有时候交谈变得空洞，沉默却想沟通。
Sometimes the conversation becomes empty, but silence wants to communicate.
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