You'll also have to take an "update" test as new DB2 releases come out, once every couple years, to remain current.

每隔几年就会出现新的DB2发行版，在出现新DB 2发行版时，您还必须参加“更新”考试以保持证书是最新的。

youdao

But once curse words come out, most bosses will have the same response: "You're fired!"

然而一旦说出咒骂的言语，大多数老板都会做出相同反应：“你被解雇了！”

youdao

Once a word goes in, it doesn't come out. We have to have examples of it having passed into common usage or within a specialist area.

她说：“一个词语一旦被收入字典，就不会被删除。当它成为常用词或专业词后，我们必须举出与之相关的例子。”

youdao

"We have gone through turmoil. We have gone through civil war, and we have come out stronger, and we will do so once more."

VOA: standard.2010.05.22

In the past few weeks, Cosgrove and others have come to find out that radioactive tritium leaked from a pipeline leading off the plant grounds not just once in 2000, as the community had initially been told, but at least three other times as well, dating back to 1996.

NPR: Officials Probe Spills at Illinois Nuclear Power Plant