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。

The production of these new ice cream varieties is limited so far, but it is expected that they will soon become established.

迄今为止，这些新冰淇淋品种的产量有限， 但预计它们很快就会成熟。

The idea is to take a 'nature-first'  approach too, meaning that the land is given time to become established with plants  and wildlife before the main development begins.

这个想法也是采取“自然优先”的方法，这意味着在主要开发开始之前，土地有时间种植植物和野生动物。

A Shelterwood Cut, which only takes place in a mature forest that has already been thinned several times, involves removing all the mature trees when other seedlings have become established.

庇护林砍伐只发生在已经经过数次间伐的成熟森林中，涉及在其他幼苗长成后清除所有成熟树木。