The conditions for it have been building , in slow motion , for years 促发战争的种种条件都是在长年累月中缓慢地积蓄起来。
Crops often are grown year after year in the same fields , so the soil loses all of its nutrients 长年累月，在同一块地里种一种农作物，很容易让土地没有营养。
These problem are genetic in nature , but wear & tear , and injuries can aggravate the problems 这类问题多属遗传性疾病，但是长年累月的耗损和受伤也将导致有关问题日益严重。
Long - term effects may , however , be observed if exposed at this level persistently for months or years 但如长年累月吸入污染程度偏高的空气，长远来说对健康亦可能引致不良的影响。
Long - term effects may , however , be observed if exposed at this level persistently for months or years 但如长年累月吸入污染程度偏高的空气，长远来说对健康亦可能引致不良的影响。
It is easy to forget that the pharmaceutical industry has its roots in the ancient art of botanising 通过药剂学家在长年累月的药用植物采集过程中逐渐了解药物的特性，才有了今天的制药工业。
" no , it is not existence , then , that i regret , but the ruin of projects so slowly carried out , so laboriously framed 不，生命的终结并不可怕，而是我这样辛辛苦苦长年累月设计出来的计划就这样毁了。
If there ' d been years and years of nothing , then a bird to sing to you , it would be awful ? still 寂静 , after the bird was still 如果长年累月相安无事，有只鸟给你唱歌，那么鸟死之后，会静的吓人。
Only the snow and the frost are happy . “ spring doesn ' t come to this garden . ” they say . “ we can live here all year 只有雪和霜非常高兴。 “春天不会来到这个花园里！ ”他们说。 “我们可以长年累月地住在这里！ ”
Only the snow and the frost are happy . “ spring doesn ' t come to this garden . ” they say . “ we can live here all year 只有雪和霜非常高兴。 “这个花园里春天不会来！ ”他们说。 “我们可以长年累月地住在这儿了！ ”
