用来表示

He entered the room, turned on the light and read an evening paper.

当两个或两个以上的动作用 and 或 but 连接时，按时间顺序只需用一般过去时代替过去完成时；另外在引导的从句中由于这些连词本身已经表示时间的先后，因此也可以用过去时来代替过去完成时

Certain features of the harvester are illustrated in somewhat schematic form in the interest of clarity and conciseness.

在下面的叙述中，所涉及到的所有相同零件均用同样的基准数来标注，某些零件将用少量简图的形式简洁明了地表示。

If the IEEE double-precision significand has more precision than the internal representation it will be rounded to the internal representation using the round to nearest rule.

如果 IEEE 的双精确有效数字比内部表示法有更多的精确度，它将会被用四舍五入到最接近的规则来四舍五入成内部表示法。

NURBS has become a representation standard for geometric design systems since 1990.However, it is difficult to model complicated objects with only one NURBS surface patch due to its rectangular domain, and it still suffers from serious limitations in surface stitching.

九十年代以来，NURBS曲线曲面已经成为计算机辅助设计系统的表示标准，由于NURBS曲面定义在矩形域上，难以直接用一张NURBS曲面来整体表示复杂曲面，需要采用分片构造的方法才能达到目的，使得拼接边界处的光滑性也受到了严重限制。

There are verbs that can be either transitive or intransitive and which can be active in form but passive in meaning.

我个人认为这一课的难点有：用现在进行体主动形式表示被动意义的这一类动词，他们是用物体来作主语的。

Alpha is measured from 255 to 0, where 0 is completely transparent, and 255 is completely opaque.

Alpha用255到0的一个数来衡量，其中0表示完全透明，255表示完全不透明。

With hydroponic culture, we studied the effects of Zn(superscript 2+) on dry matter and zinc accumulation in wheat seedlings using Chang 5864 as the experimental material. In this paper, Zn(superscript 2+) concentration in cultivating solution was 30 and 60 mgL^(-1), respectively, and 0 mgL^(-1) Zn was set as control. Seedling root and plumule were gathered every day from 4 d to 13 d after cultivation. We measured dry matter weight, and analyzed zinc concentration by atomic absorption spectrometry. The results showed that the dry matter accumulation in seedling root and plumule were all significantly improved under Zn treatment.

为了探明Zn在小麦植株中的吸收、分配和积累规律，以小麦品种长5864为供试材料，来用室内水培方法，于培养4~13d后取幼芽和幼根，用原子吸收分光光度计法测定样品中Zn的含量，研究了不同Zn(上标 2+)供应水平（0、30、60mgL^(-1)，分别用Zn0、Zn30、Zn60表示）对小麦幼苗干物质积累及幼苗Zn含量和积累的影响，分析了小麦幼苗中Zn的积累规律。

If the IEEE single-precision significand has more precision than the internal representation, it will be rounded to the internal representation using the round to nearest rule.

如果 IEEE 的单精确有效数字比内部表示法有更多的精确度，它将会被用四舍五入到最接近的规则来四舍五入成内部表示法。

From its founding in 1908 to 1927, the society identified itself only by the name "Anak" or "Anak Society". In 1928 and 1929, the society adopted a bend sinister gules, a type of diagonal red line borrowed from heraldry. The bend was dropped after 1930, following the introduction of a crest bearing the face of a cyclops and the Hebrew inscription , meaning Anak, both affixed to a capital letter T.

从1908年建立到1927年，该协会仅用&阿纳&或&阿纳协会&来代表自己。1928至1929年间，他们用了一条红色的诡异的曲线，该曲线是源于纹章学中的一种红色对角线。1930年后，该曲线被弃用，取而代之的是一个独眼巨人面的纹饰，同时还配有希伯来文，以表示阿纳，两个标志都附加着大写字母 T 。

A2, in the world, the vast majority of AM points per inch of the number of lines in the dot-matrix, only Germany once in a while the number of dots per centimeter line. 150 line represents the inch 150 x 150 line = 22,500 a number of points, higher numbers, the more business card printing and membership card, the more difficult, making the good paper business card printing and membership card making for behaving as a musician of image quality, the use of more than 300 line number would be closer to the continuous tone of the feeling, on the other hand, are coarse thick wire.

A2、在寰宇上，绝不小众数的AM网不面都以每寸有众少线的不面阵来算，只有德国不常以每公分有众少线筹算。150线表示每寸有150×150线=22，500个网不面，数字越不小不面数越众，制卡和会员卡制作越艰难，在好的纸张制卡和会员卡制作后提下可表示很澈底的影像品格，搁置300线以上的线数不离很挨近不断调的发觉，反之，粗纸不离给用粗网线数。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。