The duty-bound promise, though only taking root in the pure soil of my heart quietly, has always been my motive power to strive.

尽管这义不容辞的承诺，只是默默地植根在我纯洁的心壤上，它成为我奋斗的动力。

youdao

Where land is cropped regularly, there are bound to be times when the soil life is reduced.

定期耕种的地方，就必然有土地寿命减少的时候。

youdao

Second, the state of inter-aggregate pore water of cohesive soil is determined by(balanced) condition between damping of bound water membrane and permeability pressure of hydraulic gradient.

粘性土团粒间孔隙水的连通状态决定于团粒接触点附近渗透结合水膜的粘滞力和外界水力梯度的渗透力之间平衡状况；

youdao

Radioecologist Nick Beresford from Centre of Ecology and Hydrology in Lancaster explained that once in soil, caesium will become bound to mineral components, which limits its uptake into plants.

BBC: Fukushima fallout fears over Japan farms

While the caesium is hard for plants and animals to take up when it is tightly bound to the soil, once in solution (dissolved in water) it can be more readily absorbed.

BBC: Daunting challenge of Fukushima clean-up

The impact will not, however, be sufficiently energetic to melt the lunar soil and release any water that is bound in hydrated minerals.

ECONOMIST: Creative destruction