An empty promise is insincere.

空洞的诺言是无诚意的。

youdao

So far, it's nothing more than just an empty promise.

到目前为止，人们得到的不过是一些空洞的许诺。

youdao

The most exhausting thing in life is being insincere. An empty promise is insincere.

生活中最令人筋疲力尽的是弄虚作假。空洞的诺言是无诚意的。

youdao

He said new Security Council sanctions approved in June make clear that international law is not an empty promise.

VOA: special.2010.09.25

"The world must stand together to demonstrate that international law is not an empty promise."

VOA: standard.2009.09.23

First, ministers got the guru to give an empty promise that his gathering would be called off.

ECONOMIST: A populist yogi ties the government up in knots

There must be some reason why it is mainly liberals who tend to say this, but the chief thing to note about the promise is that it is usually an empty one.

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Mr Jethmalani's promise to make homes affordable could remain an empty boast.

ECONOMIST: Housing finance in India