once-function

常见例句

These chromosomal regions could be composed of the now-defunct remains of ancient genes, known as pseudogenes, which were once functional copies of genes but have since lost their protein-coding ability (and, presumably, their biological function).
這些染色躰區域可能由現在死亡的遠古基因殘餘組成，如熟悉的假基因，它們曾經發揮過基因複制功能衹是已經喪失了蛋白質編碼能力（大概爲它們的生物學作用）。
It is necessary that he be sent there at once.
有必要馬上派他到那裡去。
She writes to her parents once a week.
她每周給父母寫一封信。
More than once I've felt my heart slip a cog.
我不止一次感到心髒突然停跳一下。
My inn had once been a part of an ancient ecclesiastical house.
我的客棧曾經是一個古老教會的房子的一部分。
He and I were shipmates on a trawler once.
我與他一度同在一艘拖網船上工作。