This aims to boost the fertility of soil and keep it moist through established practices.

这种方法目的在于通过既有的惯常做法，增加土壤的肥力，保持土壤湿度。

Over time, as these become established practices, students' commitment to school is eroded bit by bit.

时间一长，当这些变成习以为常的做法以后，学生对学习的投入也就一点一点地减少。

You have no choice but to uphold the established practice of eminent domain.

您只能继续维持政府征用权的原有机制。

In a nutshell, territorial disputes are usually not resolved by treaty laws but customary law which is established state practices and customs.

总之，在国际法里，领土纠纷一般不通过条约法，而是由习惯法解决, 习惯法是指国家间约定俗成，且共同接收的惯例。

These early works also established  a practice he would continue with for years to come of using popular histories of the  period as source material.

这些早期作品也确立了他将在未来几年继续使用该时期的流行历史作为原始资料的做法。