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The tree α-cellulose δ^13C time series from 1835 to 1997 was obtained based on cross-dating tree rings age from the Tianmu Mountain, Zhejiang Province. After removing the long-term decrease trend, which is related to atmospheric CO2 concentration of the δ^13C series, we analyzed the correlation between the δ^13C and the flood/drought index of different periods. The results suggest that both the same year and the next year tree ring δ^13C are distinctly related with the spring and summer drought indices, showing that the δ^13C better responsed to the spring and summer flood/drought.

对采自天目山的柳杉树轮进行交叉定年后，测得树轮的δ^13C年序列，将δ^13C去除大气CO2趋势影响后的高频变化与不同时段的旱涝指数进行相关分析，结果显示：春夏季的旱涝指数与当年和滞后一年的δ^13C序列有着比较显著的相关性，表明树轮δ^13C对春夏季旱涝的发生有着比较好的响应。

Our company whether one collect spinning, weave a specialized one that finished product produce cool to spin enterprises with summer cool house, produce per month summer sleeping mat can reach 200,000 over, our company wooden fiber natural mat, special bamboo mat,etc.

我司是一家集纺丝、编织和夏凉家居成品生产的专业的凉纺企业，目前月产凉席可达20万余套，近年我司的纯木纤维自然席、特种竹席等产品畅销全国各地，被众多消费者誉为健康产品。

However, in the front of the mirror to see your own face: black, wrinkles, acne, sun felt that she had a summer job or not been done whitening, this summer on your skin is still left its mark.

可是，对着镜子看看自己的脸：变黑，皱纹，青春痘，原来自己一夏天的防晒美白工作还是没有做到位，这个夏天依然在你的肌肤上留下了痕迹。

Results show that in recent years, the summer rainfall in Harbin displayed the most apparent cyclical variation on a 29-38-year scale, the largest modulus, and the strongest energy; and the summer rainfall in Nenjiang did an obvious cyclical variation on a 19-30-year scale, and its energy value is quite large. Both the two cyclical variations showed a trend of being stronger in energy with the time.

结果表明：哈尔滨近年来夏季降雨在29~38a尺度周期变化最明显，模值最大，能量最强；嫩江夏季降雨在19~30a周期变化较强，能量值较大；2个周期变化都具有随时间推移能量进一步加大的趋势。

The results indicated that the surface salt contents in the spring of 2006 were the highest among the three samplings, the surface soil salt contents declined from spring to summer of 2006, and the change of surface soil salt contents was not obvious from summer to autumn/winter of 2006. The variation of surface soil salt contents was related to rainfall greatly.

土壤盐分浓度的变化与降雨量有密切关系，虽然2006年降雨偏多，但佛山市南海区农业集约化水平较高，部分菜地连年种植蔬菜、复种指数极高、化肥施用量偏大，从而在遇到干旱年份和季节，集约化露天菜地土壤仍有发生次生盐渍化的风险。

Each summer, Tom, his mother and three brothers, would pack up the station wagon with camping gear and head out for the entire summer to a different region of the country.

每个夏天，Tom、母亲和他的3个兄弟，会整理行囊带上野营工具，出发到美国完全不同的另一个地区来度过整个夏天。

I was so ready. I loved high school — I had such great friends and everything — but I went and did summer stock theater the summer before my senior year and met all these people who were actors in New York. My sister was like, \"Well, I\'m moving back to New York in January, why don\'t you graduate high school early and come with?\" Basically, instead of, \"Mom, can I?\"

我爱高中生活，我有很多要好的高中朋友和回忆，但是我高三前去了纽约，见到了纽约的演员，我姐姐就说&我1月要搬回纽约，你为啥不早点毕业跟我一起来啊&基本上都不是跟妈妈说&妈，我能不能去啊&，而直接了当的说&妈，我下定决心要去纽约&。

Like stressed grape vines in the summer heat, cold-weather herbs seem to put more concentrated energy into growing, and their pungency outstrips that of summer herbs.

如同炎炎夏日拉紧的葡萄藤，冬日的草本植物看起来集中了更多的能量用于了生长，因此它们比夏天的时候更加辛辣。

The results showed that cold tolerance of the pupa followed strong seasonal rhythm: the pre-winter population had higher tolerance to low temperature than the summer population; and the summer population completely collapsed as exposed to 0℃ for 2 days, but there was sti...

自然界中昆虫的世代普遍要经历不同栖境和不同季节温度的变化，包括夏季高温和冬季低温的胁迫。基于对高温

The condition is more severe for farmers who grow vegetables. For examples, cauliflowers and lettuces can only grow in colder weather, and they cannot grow in the summer. In the summer, tomatoes and bitter melons would get sick easily. After a heavy rain, when their vegetables all bathe in the water, the farmers get nothing for their efforts.

而蔬菜农友更惨，因为天气炎热，很多作物有温度障碍，例如花椰菜与莴苣喜欢比较凉冷的生长气候，夏天就会过热而长不起来；番茄与苦瓜在夏季容易有疫病，一场大雨下来，农友的心血全部都泡在水里，没有东西收成。

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