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At twenty years of age , the will reigns; at thirty , the wit ; and at

二十岁时起支配作用的是意志，三十岁时是机智，四十岁时是判断。

During the motion process, the stagnation and back commutation occur and worsen the performances of circuit breaker. According to the real interruption process, a three-dimensional(3-D) model of arc motion under the effect of external magnetic field is built based on magnetohydrodynamic, which can predict the restriking phenomena. With air vents opened to 60%, the restriking phenomena occur under 3mT magnetic field; when the magnetic field is increased to 5mT, the restriking phenomena disappears.

该文以磁流体动力学为基础建立了三维空气电弧等离子体在外部磁场作用下运动的数学模型，此模型可以预测电弧的重击穿现象，并发现当灭弧室的出口面积为60%时，电弧在3mT磁场的作用下运动时出现了重击穿现象，而当磁场增大到5mT时重击穿现象消失。

And it was the sound of love that reverberated in their dinner conversations.

当一位父亲和他的儿子一同傻笑时，当一位母亲给一个小婴儿挠痒痒时，是爱的声音在卧室里回响，当父母给孩子们读睡前故事时，是爱的声音从儿童文学经典里回响。

With saccharified liquid of corn meal and cassava starch as a material respectively, the effects of corn steep liquor concentrations on glycerol fermentation by osmophilic yeast were discussed.

然后分别以玉米粉和木薯淀粉糖化液为原料，用耐高渗酵母发酵生产甘油，研究了玉米浆对二者甘油发酵的影响并对二者进行了比较，结果表明：当玉米粉和木薯淀粉糖化液还原糖含量分别为 2 5 %，尿素为 0 。2 %，pH为 4 。5时，用玉米粉糖化液发酵甘油时可不添加玉米浆，甘油产量最高可达 2 %，而用木薯淀粉糖化液发酵甘油时，适宜的玉米浆为 0 。15 %，甘油产量最高可达 4 。9%。

The work song of boatman in Xiajiang of the structure characteristic is the structure of the suite of song of a kind of divertimento, the work songs of several kinds of different music personalities are connected together, so as to meet every need of period in the course of navigating , sing " tow the work song " if having water, sing " risk one's life work song " at passing dangerous shoaling , is it is it " shake the scull work song " to " push away the oar work song " to sing when entering the water, sing " pulling the stern work song ",etc.

峡江船工号子是一种套曲组歌结构，几种不同音乐性格的号子连在一起，以适应在行船过程中每一时段的需要，如上水时唱&拉纤号子&，过险滩时唱&拼命号子&，下水时唱&推桡号子&&摇橹号子&等。

Ltd. The main problem at the beginning is to solve the difficulties due to the more longer lengths of tencel and the linen fibres, the hardness, thick and poor length uniformity of linen fibers, to seek the optimal pulp formula, reasonably adjusts starching parameters to guarantee the warp thread smoothly for weaving. During woveing the main problem was to solve the breakages of weft yarn due to its crisp and hard properties.

试织采用的是保定依棉集团有限公司的片梭织机进行试织，浆纱时优选浆料配方，合理调整上浆工序各种参数，浆纱后保证了经纱的顺利织造，织造时主要解决了天丝/亚麻混纺纱做纬纱时易脆断、纱线硬、严重的粗细节给试织带来的困难。

Using tamato seedlings as experimental material, we examined the adaptive changes of the proton translocating pumps and protein components in vacuolar membranes of plant during phosphate starvation.

本项目以番茄为材料，对磷饥饿时植物液泡膜质子ATP酶和焦磷酸酶活性以及液泡膜蛋白组分的适应性变化进行研究，以探明磷饥饿时植物液泡膜质子泵活性的变化与Pi跨液泡膜运转的关系，并了解磷饥饿时植物液泡膜是否产生有特异性诱导蛋白及其可能的功能。

Results showed that shoot biomass of H. annuus was significantly higher than that of R. acetosa and R. hastatus; among three plant species, 134Cs specific activity in shoots was the highest in H. annuus after 50 d-treatment, however after 70 d-treatment, that in R. acetosa was the highest. Bioaccumulation ratio reached 1.5, 1.4 and 1.3 in R. acetosa, R. hastatus and H. annuus after 70 d-treatment, and the former two plants kept with trend of continuously increasing. Three plants were resistant to 134Cs contaminated soil and capable of translocating 134Cs from soil to plants. Among them, H. annuus removed greatest 134Cs amount in the aboveground part during the experiment period, and R. acetosa, R.

结果表明，向日葵地上部生物量显著高于酸模和戟叶酸模；处理50d时，向日葵地上部134Cs比活度在3种植物中达到最高，而在处理70d时，酸模地上部134Cs的比活度达到最高；处理70d时，酸模、戟叶酸模和向日葵对134Cs的富集系数均大于1，分别达到1.5、1.4和1.3，且前2种植物继续保持快速上升的趋势。3种植物对铯污染土壤具有一定的忍耐性，并具有较强的从土壤向植物转移铯的能力；在本实验期内（70d）向日葵对土壤中放射性铯的剔除能力最强，而酸模和戟叶酸模则具有更强的铯转移能力。

So, when the stock market takes a dive, when my ill-considered mountain of real estate tumbles, when I learn I won't be able to live like Donald Trump in my later years, I try look at my life through my grandfather's and father's eyes.

因此，当股市暴跌之时，当我那欠缺考虑的房产大幅缩水之时，当我意识到我无法像唐纳德。特朗普那样度过我的晚年之时，我都试图从我祖父和父亲的角度来看待我的人生。

Every time he tutored me, he would be very patient at first

他每次辅导我时，开始时很耐心，但结束时总是很生

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷