In art criticism, you must assume the artist has a secret message hidden within the work.

在进行艺术批评时，你必须假设艺术家在作品中隐藏着秘密信息。

We intercepted and decoded a secret message from their embassy.

我们截获并破译出从他们大使馆发出的密电。

Thus I want to make a gift to you of this Mysterious Secret Message.

因此，我想把这个神秘的信息作为礼物送给你。

At first nobody could work out the secret message the dead man had left.

起先，没有人能弄懂死者留下的秘密留言。

At first, no one could work out the secret message left by the dead person.

起先，没有人能弄懂死者留下的秘密留言。