A survey commissioned by the action committee against narcotics ( acan ) and the narcotics division ( nd ) of the security bureau has revealed a significant fall in the rate of drug abuse among students compared with figures taken in 2000 由禁毒常务委员会（委员会）和保安局禁毒处（禁毒处）委托进行的调查显示，滥用药物的学生比例较二年显著下降。
The value of psychosocial group intervention on women with infertility was found to be effective in reducing anxiety . a pioneer local study on the psychosocial group intervention for ivf women using the eastern body - mind - spirit approach 研究结果显示，接受身心灵小组介入疗法之妇女，其焦虑不安的指数显著下降，透过试管婴儿治疗而成功怀孕的妇女比例亦相对较多。
Either a huge volcanic eruption or a large meteorite colliding with earth could have created a large dust cloud throughout earth ' s atmosphere that would have been capable of blocking enough sunlight to lower global temperatures significantly 要么是巨大的火山喷发，要么是撞击地球的大型小行星导致地球大气形成一大片尘埃云层，这阻止了一定的阳光导致全球温度显著下降。
In conclusion , it was found that mdc was associated with a significant reduction in the risk for all - cause mortality and , although not statistically significant , a trend toward a reduction in risk for all - cause and cardiovascular - specific hospitalizations 总之， mdc组患者全因死亡风险显著下降，而且虽没有统计学差异，但全因和因心血管疾病住院治疗风险呈现出下降的趋势。
Either a huge volcanic eruption or a large meteorite colliding with earth could have created a large dust cloud throughout earth ' s atmosphere that & nbsp ; would have been capable of blocking enough sunlight to lower global temperatures significantly 要么是巨大的火山喷发，要么是撞击地球的大型小行星导致地球大气形成一大片尘埃云层，这阻止了一定的阳光导致全球温度显著下降。
It has been confirmed practically that the diamond highness above base material can be adjusted with the range when the generator is put into use , and the result shows that the current density drop sharply with the increase of machining gap 结果表明，间隙值的扩大伴随电流密度的显著下降，检测电解电流控制脉冲能量的方法对实现电蚀层厚度基本可控是可行的，可让金刚石突出一定高度。
The grafting degree and grafting efficiency were decreased . the conversion of semi - contionious emulsion polymerization was decreased as the addition of mmt was increased because of the effect of monomer diffusion and decreasing efficiency of intiating agent 半连续乳液聚合法制备abs mmt时，蒙脱土的存在使聚合转化率显著下降，并且mmt粘土含量越高，对乳液共聚合造成的不利影响越大。
