午后发生的

The result shows that both the typical hail process occured at afternoon in early summer when hailstone occured easily and formed under the influence of the Mongolian cold vortex and the circulation background that high pressure at west of Ningixa and low pressure at east of Ningixa.

结果表明：两次冰雹天气过程均发生在宁夏冰雹易发期夏初季节的午后，是在"西高东低"有利于强对流天气发生的环流背景下，受蒙古冷涡影响而形成的。

Naps can often be the perfect weapons to combat midafternoon sluggishness, which tends to hit between 2 and 5 p.m.

午后的昏昏沉沉多发生在下午2-5点的时候，午睡是对付这种昏昏然的灵丹妙药。

Thanks to the midnight sun, everything seems to happen in the afternoon.

由于午夜的阳光，一切看起来就好像发生在午后。

And yet here was Matthew Cuthbert, at half-past three on the afternoon of a busy day, placidly driving over the hollow and up the hill; moreover, he wore a white collar and his best suit of clothes, which was plain proof that he was going out of Avonlea; and he had the buggy and the sorrel mare, which betokened that he was going a considerable distance.

可是奇怪的事情发生了——在午后三点半左右，这个通常大家都正忙着的时刻，马修·卡斯伯特却不慌不忙地驾着马车穿过山谷，他身上还穿着最好的一套衣服——带着白色硬领的礼服，肯定是要离开安维利村去办事，他赶着栗色母马拉的轻便马车，看来是要走一段很远的路。

The result showed that the strong storm followed by mesoscale squall line was primary cause of strong sandstorm producing, steps and ladders short wave trough of 500 hPa was great criterion triggering system for the mesoscale squall line producing, the essential dynamic condition was provided by distortion field and the mesoscale low pressure of 700 hPa for the strong sandstorm forming and maintaining in mid-west of Hexi Corridor, the deep vertical circulation development condition was basic power that urged squall line to occur and sand dust to curl up, which was provided for the deep convection development by superimposition of lifting movement before ground cold front and ascendant current of secondary circulation in upper air jet entrance region, temperature and the barometric gradient around the cold front was enlarged by enhancement of ground thermal low and temperature diurnalvariation of afternoon, by which essential thermal energy unstable condition was provided for the gale and strong sandstorm eruption, the strong sandstorm appeared in downstream of -200 m^2s^(-2) center of vertical helicity, the vertical helicity had good instruction significance for development of squall line and landing region of sandstorm, the mesoscale squall line occurred in unstable stratification, basic condition of potential energy transforming as kinetic energy was provided by strong unstable stratification for the strong sandstorm forming and developing.

结果表明：中尺度飑线所伴随的强风暴是产生强沙尘暴的主要原因；500 hPa阶梯短波槽是中尺度飑线产生的大尺度触发系统，河西走廊中西部700 hp变形场、中尺度低压为强沙尘暴形成和维持提供了必要的动力条件；地面冷锋前上升运动与高空急流入口区次级环流的上升气流的叠加，为深对流发展提供了深厚的垂直环流发展条件，是促使飑线发生和沙尘卷起的基本动力；地面热低压的加强和午后气温的日变化加大了冷锋前后的温度和气压梯度，为大风、强沙尘暴爆发提供了必要的热力不稳定条件；强沙尘暴出现在垂直螺旋度为－200平方公尺/s^2中心的下游，垂直螺旋度对飑线的发展和沙尘暴的落区具有较好的指示意义；中尺度飑线发生在不稳定层结内，较强的不稳定层结为强沙尘暴形成、发展提供了位能转化为动能的基本条件。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。