n.未察觉的观察者

a fly on the wall───隐蔽的或不引人注意的旁观者

fly-on-the-wall───n.未察觉的观察者

hole in the wall───又小又偏僻的很难找的地方

be on the ball───提高警惕；全神贯注；机灵

hole in the walls───又小又偏僻的很难找的地方

climb the wall───非常烦恼；焦躁不安

face the wall───面朝墙

fly off the handle───冒火；勃然大怒

go to the wall───碰壁；失败

I'd love to be a fly on the wall when he tells her the news.───他把这消息告诉她时，我想悄悄在旁观看。

For example, while we can see the fly on the wall, our eyes aren't equipped to make out the fine details of the hairs on it's face.───例如，我们可以看到墙上的苍蝇，但我们的眼睛是看不到它细致的毛发和面孔。

In this case, it is wise to be a fly on the wall.───在这种情况下, 还是做个置身事外的观察者比较明智.

I wish I could be a fly on the wall when they discuss my future.───在他们讨论我的前途时,我恨不得能偷偷旁观.

The rumor seems to have emanated from Fly On The Wall, a site that serves up gossip to the investing community.───谣言好像是从旁观者散布出来的，是一个给投资界提供小道消息的网站。

You should be a fly on the wall and hear him sing your praises.

I wish I'd been a fly on the wall during that conversation.

I wish I could be a fly on the wall when they discuss my future.

I was a bIt'shy, like a fly on the wall.

Oh, wouldn't I like to be a fly on the wall when you tell her the latest!

I'd love to be a fly on the wall when he tells her the news.

I'd love to be a fly on the wall when those two get home!

What I'd give to be a fly on the wall when Davis finds out what's happened to his precious cargo.

I wished I could be a fly on the wall.