1. for a second

一會兒，片刻

eg. But for a second, I hesitated. And she saw it.

但在一秒鐘內，我猶豫了，她看出了這點。

eg. For a second we both sit there, like playing cards or something.

有一兩秒鐘，我們倆都坐在那里，就像在打撲克牌什么的。

2. now and again

不時；時而

eg. There were mainly foreigners living there, so we could chat with them now and again.

那里進進出出都是外國人, 我們可以時不時和他們搭訕聊天.

eg. Zoom in and zoom out every now and again to make sure you are moving forward with the overall task.

時而不時地從全局和部分來看任務計劃，確保你在完成整個任務過程中一直在前進。

3. aware of

意識到，知道

eg. Yon can only humbug those who are not aware of your tricks.

你只能欺騙還不清楚你的伎倆的那些人。

eg. I need not press the urgency of the matter on you, as I konw you are fully aware of it yourselves.

我無需向你們強調此事的急迫性，因為我知道，你們自己對此完全了解。