Without noticing, he walked past his friend on the street.

他在街上走过朋友时没有注意到。

The building was so nondescript that I walked past it without noticing.

这栋建筑物太平凡的了，我走过时都没有注意到。

It seems impossible that I could have walked by without noticing her.

我不可能不注意到她就走过去了。

He drove by without noticing us.

他开车越过去，没有注意到我们。

Today we cannot walk a few steps without noticing advertising.

今天我们只要走出几步路，就一定会注意到广告。

He pursued his theme, however, without noticing my deprecation.

然而他不顾我反对，扭住这个话题不放。

B. So, without noticing the word of command, he jogged onward.

因此，他没有听见这道命令，依然磨磨蹭蹭地往前走。

If you don't pay attention you'll walk by him without noticing him…

如果你不注意的话，你就会从他身边错过的。

Without noticing, he has entered the shooting range of his opponent.

不知不觉地落入了对手的彀中。

He just tore along the street, without noticing that a man was after him.

他急急地沿着大街走，没注意有个人跟着他。