Allow the first rain after a long dry spell to run off, thus cleaning the accumulations of dust and sediment.
让长时间干旱后的第一场雨水流掉，这场雨会帮助冲洗掉堆积的灰尘和沉积物。
Before the boom, the junior mining companies that include most of the Toronto listings had suffered a long dry spell.
在矿业的繁荣期之前，低级的采矿公司经历了一段长时间的萧条期，这些公司中有大部分是在多伦多上市的。
This year a long dry spell lasted until August, but rain began to fall this month raising hopes that farmers will be able to plant winter crops such as wheat.
今年干旱的情况一直持续到8月，9月份才开始降雨，点燃了农民能够种植小麦等冬季作物的希望。
There has been a long spell of dry weather.
干旱天气已持续很长一段时间了。
So for celibate rotifers that want to stay clean, a good long dry spell is just what the doctor ordered.
因此，对于那些想要健康存活而又坚守"禁欲主义"的蛭形轮虫而言，保持长时间干燥就是"谨遵医嘱"。
Nevertheless, analysts are cautious about calling a definite end to the industry's long dry spell.
不过，分析师们仍然谨慎，不会贸然宣告行业干旱期的结束。
Nevertheless, analysts are cautious about calling a definite end to the industry's long dry spell.
不过，分析师们仍然谨慎，不会贸然宣告行业干旱期的结束。
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