1.interest rate 利率

例句:Investment is a function of the interest rate.

投资随着利率的变化而变。

2.start to 开始

例句:The cells will promptly start to soak up moisture.

细胞会立即开始吸收水分。

3.allow to 允许

例句:Add a little of the warmed milk and allow to froth a little.

加一点温牛奶，并让它起点儿沫。

4.keep up with 追上,赶上

例句:Like many other developers, he is self-taught and relies on online resources to keep up with technological developments.

和许多开发人员一样，他自学成才，依靠网络资源紧跟技术发展的步伐。