In this way, "sweeping the dust" before the Spring Festival means a thorough cleaning of houses to sweep away bad luck in the past year.

这样，“在春节前扫尘”是指彻底清洁房屋扫除过去一年的厄运。

youdao

One possibility is that the spring sunshine caused blocks of the ice to expand and break apart, sending loose dust and ice particles crashing down the slope.

一种可能的解释是春季逐渐强烈的光照使得这些干冰膨胀破裂，挤压悬崖边疏松的土和冰滚落下来。

youdao

"In the spring, it's trees; the summer, grasses; and fall, weeds." Being stuck indoors all winter also may cause trouble for those allergic to dust and pet dander, he adds.

“春天时，过敏原往往是树，夏天就是草地，秋天就变成杂草了，”他还补充道，整个冬天都待在家里的人也会因为灰尘或者宠物毛屑而感染过敏。

youdao

Meanwhile, the old and obsolete laws collect dust, waiting to spring back to life for all the wrong reasons, sometimes to enforce precisely the opposite result to what well-meaning supporters hoped to achieve.

FORBES: At CES, the only Law that Matters is Moore's Law