Gold, wood, water, fire and soil take the course of nature.

In a letter, Jefferson expressed concern about the possible ruin of his Monticello farm "if the seasons should, against the course of nature hitherto observed, continue constantly hostile to our agriculture."

在一封信里，杰斐逊担心“如果目前这种违背自然规律的时令延续下去，一直对农业不利，”他的蒙蒂塞洛农场可能会倒掉。

By reading reviews, you can keep au courant with new developments in literature, films, television, and the theater.

通过阅读评论，你能熟悉（时下）中文学、电影，电视和戏院的新发展。

Clothes that suggest simplicity and co-ordination-while, importantly, looking au courant.

携带的行头衣服必须讲究简约与搭配——同时外观必须与时俱进也至关重要。

The Americans want to be au courant, to know what fiction has critical prestige in Europe.

美国人想了解现状，想知道欧洲时下声望最高的小说是什么。

Every few years a new public policy issue becomes au courant for authors.

每隔几年，公共政策领域的新问题就会引起作家们的关注。

Generally, the procedure qualification test shall be carried out on the product, or on the relevant test coupon.

工艺评定试验一般应在产品上进行，也可在相应的试块上进行。

Consideration of Standard on Mechanical Properties Test of Welding Coupon of Pressured Equipment

对承压设备产品焊接试件的力学性能检验标准的思考

The laboratory assessment tests showed that, at a concentration of 60 mg/ 1, the corrosion rate of test coupon was 0.029 mm/ yr and the cohesion rate was 4.32 mcm, which were at the best levels.

实验室评定表明：在药剂浓度为60mg/L的情况下，碳钢试样的腐蚀率为0.029mm，a，粘附速度为4.32mcm，均达到很好级；

When flow velocity reaches 2.62 m/ s, the local corrosion is pitting corrosion and the protective corrosion product film can not form on the test coupon surface at the temperature of 100 ℃ and the CO_2 pressure of 0.03 MPa.

在流体速度为2.62m/s的情况下，温度为100℃、CO2分压为0.03MPa时，发生的局部腐蚀主要为点蚀，试样表面未能形成保护性腐蚀产物膜；

Renewal of qualification may be made for any process by welding a single test coupon of either plate or pipe, and by testing of that coupon as required by QW-301 and QW-302.

如需重新获得资质，则该焊工需要遵照QW-301和QW-302的要求，在一个板材附件试片，或一个管材附件试片上，进行焊接试验。

A Welding Procedure Qualification Record ( Form No.: FN09/ 02-02) is a record of the welding data used to weld a test coupon.

焊接程序检定记录（表号：FN09/02-02）为焊接数据记录文件，用于附体试片的焊接操作。

When the discount margin is greater than ( equal to, less than) the quoted margin, the index duration is the decreasing ( constant, increasing) function of the number of coupon payments remaining until maturity.

在贴现利差大于（等于、小于）基本利差时，利率久期是剩余付息次数的递减（不变、递增）函数；

The gross redemption yield of a bond is simply the average rate at which the sum of the future coupon payments and redemption proceeds are discounted to equate their value to the current market price.

债券的总赎回收益率，简单来说，就是使未来的息票兑现额和赎回收益的总和等于当前的市场价格的平均利率。

Prior to the early1980s, the bond market was comprised mainly of'plain vanilla'bonds with simple cashflow structures, where coupon payments and maturity were fixed at the outset.

在80年代以前，债券一般上都相当简单，即包括不太复杂的现金流动结构，票面利率和到期日在发行时已定下。

But in practice, the coupon payments can only be reinvested at the market rates operative when the coupon is received.

但是在实践中，息票只能以收到息票时的市场买卖利率进行再投资。

A bond that delays coupon payments for the first few years, paying them in a lump sum at maturity.

指债券发行人将头几年的票面利息延后至到期时一笔支付。

This new business model makes new demands, requires building a high-performance electronic coupon system to support the daily business activities.

商场对信息化提出了新需求，要求构建一个高性能的电子券系统，用来支持商场的日常经营活动。

Passenger coupon or "passenger receipt" means that portion of the ticket issued by us or on our behalf, which is so marked and which ultimately is to be retained by you.

旅客联或者“旅客收据”是指我们或者我们的代理人填开的客票中标明“旅客联”或者“旅客收据”的部分，并始终由您持有。

If you are designing a gift certificate or coupon from scratch, you can either start with a completely blank publication or adapt an existing publication.

如果要从头设计礼品证书或赠券，则可以从一个完全空白的出版物开始或采用现有出版物。

This paper, using the means of generating function and the operator of xD, compute the average and standard deviation of trials number in gift coupon collecting of a complete set or partial ones.

利用发生函数方法及发生函数的XD算子，计算在赠券收集问题中收集全套赠券与收集任意张赠券的试验数的平均值与标准差。