杳无音讯英文怎么说啊

给你两个例句参考一下来使用.

A considerable time elapsed without my hearing a word about Armand, but on the other hand the subject of Marguerite had come up a great deal.
有很长一段时间阿尔芒杳无音讯，而玛格丽特倒经常有人提起。

We have to count him as dead, for we haven’t heard from him ever since the Second World War.
自从二战以后他一直杳无音讯，所以我们只能当他已经不在人世了。

补充蕃茄小精灵一下，还有receive no reply ,或haven't received any reply

Non-contactable
Never been heard

without any information

还可以说：LOST CONTACT WITH somebody.