Non-detectable

non [[nɔn]]

adv. 非, 不

detectable [di'tektəbl]

adj. 可发觉的，可看穿的;

I know how you feel, but there's no need to go on and on about it.

我知道你的感受，可是也没必要这样没完没了。

I think it's going to take too much time.

我认为它将花太多时间。

The only way that they can preserve their history is to recount it as sagas -- legends handed down from one generation of another.These legends are useful because they can tell us something about migrations of people who lived long ago, but none could wri

他们保存历史的唯一办法是将历史当作传说讲述，由讲述人一代接一代地将史实描述为传奇故事口传下来。