The alternative, that the carbon came from the volcanoes, is unlikely because the spike is much shorter than the period of volcanic activity.
另一种说法是这种碳元素来自于火山，但这不可能，因为碳数量激增期比火山活动期要短得多。
But there were a record 26 Predator drone attacks last month, a spike in activity that suggests something is going on.
但是有一份记录表明26名袭击者在上个月发动了袭击，这次袭击如一根利刺，好像暗示着有什么事情将要发生。
Difference of them prove flow intensity of spike neck not only relate to roots vigor, may have close ties with the leaf, stem sheath and activity of capacity of reservoir.
它们之间的差异说明穗颈节间的伤流强度不但与根系活力有关，可能与叶片、茎鞘及库容活性也有密切联系。
The paper studied the photosynthetic pigments content, anti-aging enzyme activity and filling parameters of different muti-spike-type wheat cultivars in order to provide theoretical basis.
在大田条件下研究了不同多穗型小麦旗叶光合色素含量、叶片抗衰老酶活性及籽粒灌浆参数的差异，为小麦的高产超高产栽培提供一定的理论依据。
Economic activity is very weak, and, apart from the energy-related spike in 2008, the inflation rate has not been much above zero for many years.
经济活动非常疲弱，除了2008年与能源相关的上升之外，通货膨胀率已经多年没有非常明显的高于零点了。
Results: spike wave, sharp wave and other interference wave were not found in activity of finger and toe.
结果：手指、足趾活动均未见棘、尖波或其它干扰波。
As in Europe, a spike in agricultural demand, compounding the effect of the economic recovery and increased trucking activity, may have contributed to the yearly increase in diesel.
与欧洲一样，农业需求量的上升，合成了经济复苏和扩大货运活动的效应，可能是成为柴油每年增长的原因之一。
The pattern of epileptiform activity in this model included:spike waves, sharp waves, spike (or sharp)slow wave complex, high amplitude irregular epileptiform discharges.
癫痫放电的主要型式有：棘波、尖波、棘（尖）慢波综合、高幅失律等。
A little rumbler yields just a small spike, while a strong quake produces a huge spike in Twitter activity, as seen in the graph above.
轻的吵闹声产生小的峰值，而强震产生巨大的峰值，如上图所示。
A little rumbler yields just a small spike, while a strong quake produces a huge spike in Twitter activity, as seen in the graph above.
轻的吵闹声产生小的峰值，而强震产生巨大的峰值，如上图所示。
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