compaction by layers 分层填土夯实
flow by layers 层级流动
manuring by layers 分层施肥
lighting by layers 分层亮化
advancing by layers 分层推进
fish culture by layers [水产] 分层养鱼
Surrounded by layers of loneliness, I have no strength out of the trap.
寂寞层层包围,我再也没有力气走出这片重围。
Icebergs in the Antarctic area sometimes have stripes, formed by layers of snow that react to different conditions.
南极地区的冰山有时便会有条纹,由于雪层对不同环境的反应从而形成了这些条纹。
The Sun itself does not turn partly green or blue — the effect is caused by layers of the Earth's atmosphere acting like a prism.
太阳本身并不会发出绿色或蓝色的光这种效果是由于地球的大气层充当了棱镜。
Archeologists are able to estimate the age of these objects by dividing layers of dirt into time periods.
VOA: special.2009.08.18
Of 20 identifiable sites that were said to be conquered or captured by Joshua and the next generations, only two show destruction layers for this time, Hazor and Bethel.
在据说被攻占的20处可辨认的遗址中,被约书亚及其子孙所攻占,只有两处显示出当时的摧毁层,夏锁和伯特利。
Quilts are made by piecing together layers of cloth to make colorful coverings.
VOA: special.2009.11.04
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