一件工作

It's difficult to finish this work within one week.

要在不到一周的时间内完成这项工作，是件困难的事情。

It is difficult to complete this work within a week.

要在不到一周的时间内完成这项工作，是件困难的事情。

It's very difficult to finish the work within one week.

要在不到一周的时间内完成这项工作，是件困难的事情。

In order to understand the swirl system deeply,the three-dimensional particle dynamic analyzer was used to measure the velocities of the steady turbulent cold flows in the swirl three-branched modular junction located at the end of the exhaust system,and three-dimensional numerical simulation of the flows was carried out by use of the ALE algorithm.

为了深入研究螺旋流排气系统的工作机理，作者利用三维粒子动态分析仪(3D-PDA)，对一始端螺旋流三分支模件的稳态湍流流场进行了测量，并用ALE法进行了三维流动数值模拟。

Flexible bar system is diversified station facilities made up of plastic coating tube and various connectors. Any creative idea could be converted to a practical construction, realizing operator's concept and creativity for working environment. according to human system engineering principle, the product can be made up of stock shelf or station facilities in various type, specification and dimension. It is widely used in factorty, workshop and warehouse in industries such as household electrical appliances, automobile industry ,light industry, and electronics,etc. As the temporary stock shelf for spare parts and raw material, it is the necessary facility of integrated logistic

线棒柔性体统是有覆塑管和种类丰富的联结件组成形式多样的工位器具，可以将任何创造性的想法转换成一种个性化的切合实际的结构，迅速实现操作人员对工作环境的构思和创意，根据人体工程学原理，组成各种类型、规格、尺寸的工位器具和料架，广泛应用于家电、汽车、轻工、电子等行业的工厂及车间、仓库，尤其用于装配、机床等工位，作为各种零部件和原材料的暂存料架，是物流一体化的必备工具。

Condoleezza Rice was a dyed-in-the-wool realist who had famously observed that the 82nd Airborne's job description did not include escorting kids to school.

康多莉萨·赖斯是一个彻底的现实主义者，她敏锐的发现了第82号空运工作说明书中没有包括送小孩去学校一项，这件事广为人知。

Already, in 1784, the Prince von Kaunitz, minister of Joseph II and his chief counselor in the matter of religious reform, had intimated that the Emperor was not content with slow progress of the undertaking, and that for the future he would expect to see the publication of at least a volume a year, so that the work might be entirely finished in ten years.

目前，可以追溯到1784年，王子冯考尼茨部长约瑟夫二和他的政务参赞在这件事的宗教改革，纳瓦尔说，天皇是没有内容与进度缓慢的承诺，并为未来他会期待看到出版至少货量一年，使这项工作可能完全完工的十年。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。