Jpmorgan 's securities have no fixed maturity .

摩根大通出售的证券并无固定期限。

Treasurers of american firms mostly support keeping fixed navs .

而美国公司的财务主管们更倾向于固定的资产净值。

Scientists have long thought that the structure of our brain is fixed .

一直以来，科学家都认为人类大脑的结构是一成不变的。

Under a gold standard , paper money is tied to a fixed amount of gold .

在金本位制下，每单位纸币价值等同于一定数量的黄金。

In cheap cameras with fixed lenses , digital zooming has always meant a loss of image quality .

那些拥有定焦镜头的便宜相机，数码变焦总是意味着图像质量的大幅下降。