午休

Demming B,Bjorkman O (1987). Comparison of the effect of excessive light on chlorophyll fluorescence (77K) and photo yield of O2 evolution in leaves of higher plants. Planta,171: 171～184Guo LW,Shen YG (1996). Protective mechanisms against photodamage in photosynthetic apparatus of higher plants. Plant Physiol Commun,32(1):1～8 in Chinese

孟庆伟等（1996）认为光呼吸可减轻光抑制，尤其在发生光合午休时更明显，而对光合作用却有反作用，Zelitch (1992)的研究表明光呼吸随温度的升高而升高，因此高蛋白小麦中午较强的光呼吸作用可能是其Fv/Fm下降较少，而净光合速率下降幅度较大的一个重要原因。

Reading corner was set up in schools adjacent to the main building, in addition to planting trees keynote Syzygium, San kapok tree planting theme, The momentum of its towering Cui Ping inspire students to strive to excel, to establish tolerance loss stone addition, to create homework. o'clock in the best places

七读书角设立于学校主体建筑侧，除种植基调树种蒲桃外，散植主题树种木棉，其参天的气势激励苹萃学子奋发向上，设立耐损耗的石桌凳，为学生营造晨读，午休之最佳场所

In the end, by the time she announces that she's done, lunchtime is about to end.

最后，当她宣布她吃好了的时候，午休时间也差不多要过去了。

Stop it, I'm gaging.

我正好在午休。

I gobbled up his lessons, which he offered up over afternoon sessions in his office.

午休时他在自己的办公室里教我知识，每次我都如饥似渴地吸收他的经验。

The results showed: 1 Alfalfas grown for different lengths of time had considerable influence on photosynthetic characteristics of which the most important was stomatal conductance followed by transpiration rate and the chlorophyll relative content. 2 Diurnal variation in Pn and Tr had two peaks, and an obvious midday depression. 3 The net photosynthetic rate was significantly positively correlated with photosynthetic radiation, stomatal conductance, the relative chlorophyll content, and transpiration rate. The net photosynthetic rate was significantly negatively correlated with intercellular CO2 concentration.

结果表明，1生长年限对苜蓿光合特性有较大的影响，对气孔导度的影响最大，其次是蒸腾速率和叶绿素相对含量。2苜蓿叶片净光合速率、蒸腾速率日变化均呈现&双峰&曲线，有明显的光合&午休&现象。3净光合速率与光合有效辐射、气孔导度、叶绿素相对含量呈极显著正相关，与蒸腾速率呈显著正相关，与田间CO2浓度呈极显著负相关。

Net photosynthetic rate of the three ephemerals all reached the highest values at 12:00. Regarding the curves of diurnal variation, Pn of Eremopyrum and Malcolmia had two peaks, and an obvious midday depression occurred at 14:00; Transpiration rate of all the three ephemerals had only one peak; water use efficiency of Eremopyrum and Malcolmia had two peaks, and that of Tetracme had only one.

结果表明：东方旱麦草和卷果涩芥的净光合速率的日变化呈&双峰&型，14：00(采用时间均为北京时间，后同)左右存在明显的光合&午休&现象，四齿芥Pn的日变化呈&单峰&型，峰值出现在12：00与前两者的第一峰值出现时刻相同。3种植物蒸腾速率的日变化均呈&单峰&型，但不同植物的峰谷值出现时刻不同。

The light saturate point and light compensate point of seedling were 1841.67nmol m-2s-1 and 155.18 mol m-2s-1 respectively, but the LSP and LCP of the young trees were 1810.00 m-2s-1 and307.07 mol m-2s-1.(3) Comparing with other three tree species, the tree of heaven had special leaf POD isozyme patterns related with the characteristic of insect-resistance.

幼苗、幼树叶片的净光合速率日变化具有两种变化曲线，均出现&午休&现象：幼苗的光饱和点与光补偿点分另伪1841.67μmol·m~(-2)·s~(-1)和155.18μmol·m~(-2)·s~(-1)；幼树的LSP与LCP分别为1810.00μmol·m~(-2)·s~(-1)与307.07μmol·m~(-2)·s~(-1)。

Obama met and shook hands with third- and fourth-grade students at Viers Mill Elementary School during their lunch period.

在维斯米尔小学的午休时间，奥巴马同三、四年级的学生会面并握手致意。

SHANGHAI SIESTAS: Those people lying down on benches at the Expo with their shoes off are not homeless.

上海午休：这些人穿著鞋躺在世博會的长椅上，他们不是无家可归的人。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。