查询词典 not necessary

In order to investigate the long-term immune efficacy for newborns after plasma-derived HBV vaccination and to decide whether the booster vaccination is necessary or not,we followed up the children,at least once biennially,who were born in 1986 in former Nanshi District of Shanghai and had received plasma-derived HBV vaccine at birth.

上海市黄浦区在 1984年开展了人群乙型肝炎病毒感染的横断面调查[1] ，人群乙肝病毒表面抗原阳性率为11 2 9%，HBV感染率为 70 6 1%。

Since a raw file does not have any header, it is necessary to know a priori the width, height, and bit depth.

由于原始文件不具有任何头，有必要了解一个先验的宽度，高度和位深度。

Print in color when it is absolutely necessary, but if not, just use black ink.

在彩色印刷时是绝对必要的，但如果没有，就用黑色墨水。

Mr Trichet must establish a rule that the board of governors always takes a vote, ensuring that the ECB makes monetary policy decisions when necessary, not when it is politically expedient to do so.

特里谢先生必须制订一项规则，要求任何决策均由理事会表决做出，从而确保欧洲央行在制订货币政策时确实从实际需要出发，而不是出于政治利益。

Not technically thieves, the American Bobtail's love of shiny objects makes it necessary to keep jewelry boxes closed and even locked.

美国短尾猫不是高级的贼，但是它们对于发亮的东西的喜爱使你必须观赏甚至锁上珠宝匣。

Sure, you could always boil water, but not if you don't have the necessary fuel.

当然，你总是可以烧开水，但不是，如果你不具备所需的燃料。

Bookbinding has its own characteristics, at work, when it violates the binding law of nature can not reach the necessary quality.

图书装订有其自身的特点，在工作中如果违反装订规律，自然就达不到应有的质量。

This package will be bootable directly from CD-ROM, so hard disk installation will not be necessary.

这个工具包将可从CD-ROM中直接启动，所以硬盘安装将不再是必要的。

Although it is not strictly necessary to specify a break statement after the last label of a switch, the safest course is to provide a break after every label, even the last.

尽管没有严格要求在 switch 结构的最后一个标号之后指定 break 语句，但是，为了安全起见，最好在每个标号后面提供一个 break 语句，即使是最后一个标号也一样。

Mr. Geithner told the panel Thursday the government's steps were 'absolutely necessary to break the back of this financial panic' and without the steps 'you would have an economy still falling, not growing.

盖特纳周四对参众两院联合经济委员会说，政府采取的措施对结束金融恐慌是十分必要的，如果没有这些措施，美国经济就会仍处在下跌之中，不会有现在的增长。

It seems likely that Kraft will return with a better offer.

看起来卡夫要重新考虑一个更好的出价了。

But he'd rather burn off my feelers and watch me squirm.

可他却放任那个家伙对我为所欲为！