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).
这些染色体区域可能由现在死亡的远古基因残余组成，如熟悉的假基因，它们曾经发挥过基因复制功能只是已经丧失了蛋白质编码能力（大概为它们的生物学作用）。
It is necessary that he be sent there at once.
有必要马上派他到那里去。
She writes to her parents once a week.
她每周给父母写一封信。
More than once I've felt my heart slip a cog.
我不止一次感到心脏突然停跳一下。
My inn had once been a part of an ancient ecclesiastical house.
我的客栈曾经是一个古老教会的房子的一部分。
He and I were shipmates on a trawler once.
我与他一度同在一艘拖网船上工作。