I wish poetry did not become old along with years, I wish my great aspiration did not drift away along with the coming wind and rain.
但愿诗情不要随岁月一同苍老；但愿壮怀不要随风雨一同飘散！
The drift of wind and rain in the air and the existence of inhomogeneous medium make the locus of lightning behaving as irregular curve.
风雨在空中的漂移和空气中不均匀介质的存在使闪电的轨迹呈不规则曲线形。
Cumulus clouds are big, white masses of fair-weather clouds that drift across the daytime sky. But heavy layers of cumulus clouds can threaten rain. (4)
积云是白色的、标志着好天气的大云团，在白日的天空中飘浮。但是，厚厚的积云层可能是要下雨的征兆。
Cumulus clouds are big, white masses of fair-weather clouds that drift across the daytime sky. But heavy layers of cumulus clouds can threaten rain. (4)
积云是白色的、标志着好天气的大云团，在白日的天空中飘浮。但是，厚厚的积云层可能是要下雨的征兆。
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