必需

Made from certified organic milk it ishigh in iron and zinc to help build strong bones and fight infection. Bellamy'sOrganic Toddler can be used instead of cow's milk as a drink and to make foodslike custards and sauces.

Bellamy's Organic是由认证的有机鲜奶中提炼而成，富含儿童骨骼发育和增强免疫力所必需的铁和锌，从而代替牛奶成为孩子的饮品并大大提高他们的胃口。

You ought to check-in at least one hour ago.

你必需在至少1小时前办理登机。

I was the decoy, and I had to do just what Chief Petty Officer Michael Toussaint ordered.

我是猎物，而且我必需照军士长迈克尔图森的命令去做。

In order to force the leaf color to change, we need to understand how leaves change color in the fall. In short, the temp drops and blockage in the veins is formed inside the leaves and it stops water from reaching every corner of the leaves. Then the chlorophyl disappears and they are replaced by those red and yellow pigments.

为了迫使叶子变色，我们就必需要了解它在秋天是如何变色的，简言之，温度下降阻碍叶片中的叶脉形成，因而停止了水份到达它的每一个角落，叶绿素跟著消失，而被红色和黄色的色素所取而代之。

Ferrous ion and magnesium ion are both necessary to the action of bleomycin on lymcytes SCE.Key words: bleomycin;sister chromatid exchanges

一定量的Fe2+和Mg2+的存在对于BLM切割DNA的过程是必需的，EDTA和枸橼酸钠的络合作用则从反面印证了该结论。

Histones, as basic components of nucleosome, are essential to chromatin structure and function.

组蛋白作为核小体的基本组分，是染色质的结构和功能必需的。

The subsequently additional hot treatment is not necessary and the treated chrome steel can be used, such as blade in steam turbine.

随后的附加的热处理不是必需的，如此处理过的部件能够被用作为，例如，蒸汽轮机中的叶片。

However Vendor shall pay without claim for reimbursement from PDOC, all non-Sudan customs duties, import or export fees, transportation fees, port fees, quarantine fees and any other fees, levies, assessments, fines or charges of every kind and character required or levied by any other Governmental Authority on Vendor's Goods.

然而厂商将对于来自 PDOC ，所有的非苏丹关税，进口货或输出品费用，运输费用的偿还不需要要求就支付，港口费用，必需的或被在厂商的货物上的任何其他的政治权威征收的每个类型和个性的隔离费用和任何其他的费用，征税，评估，罚款或费用。

There are other classificatory systems which claim to be comprehensive, but in which the indispensable process of simplification has been carried so far that they are no longer true to the facts.

另一些分类系统声称是广泛的，但其必需的简化处理却过度了，以至于不再是真正的事实。

In order to satisfy needs of users, we should classify these resources.

为了满足不同用户的需要，必需进行资源分类。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐