幸福就是，成为你父母微笑的原由。

Happiness is being the reason behind your parents' smiles.

信贷紧缩不会毫无原由地发生了。

The credit crunch is not passing by without a trace, however.

讨厌前任老板或同事的缘故原由；

What you hated about your last boss or co-workers;

因此，裂谷系的深部过程及其原由还是知之甚少。

Thus, some deep processes of rifts and its seed is nothing to be known.

在电子供体纤维二糖存在下，CDH可以还原由豆壳过氧化物酶(SHP)氧化多种芳香化合物所生成的产物。

In the presence of cellobiose, CDH could reduce many oxidized products catalyzed by soybean hull peroxidase (SHP).