tian（1声）chang（2声）
非常规天然气资源 unconventional gas resources
冬天常打伞 be in a mood
过去这儿冬天常常下雪 Winter snows often past here
反常天气 extraordinary weather ; adverse weather ; abnormal weather
常天 Rikaline
寻常型天疱疮 Pemphigus vulgaris ; PV
先天异常 congenital anomalies
先天性异常 [医] congenital anomaly ; congenital abnormality ; Congenital anomalies ; congenital abnormalities
天文常数 astronomical constants ; [天] astronomical constant
他的魅力和受宠程度常让他无法无天为所欲为。
His charm and the fact that he is so likeable often allows him to get away with murder.
一天，他看到他的美术老师常先生的一幅画。
我早发布，常发布(从未低于十天一次，在高强度的开发周期则每天一次)。
I released early and often (almost never less often than every ten days; during periods of intense development, once a day).
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