Melatonin production is inversely proportional to that of serotonin , a chemical that constricts the blood vessels and acts as a neurotransmitter 褪黑激素是由负责神经传输功能的血清张力素serotonin转化而来。
Angina - constricting chest pain . it usually occurs under physical exertion e . g . while doing exercise , brisk walking or under emotional stress 心绞痛:通常在心脏负荷加重时才出现如运动情绪受压抑和快速行走等。
Blood that is poor in nitric oxide will scavenge the gas from other tissues , causing the vessels in those tissues to constrict 一氧化氮含量低的血液将会把其他组织中的气体一扫而空，从而导致这些组织中的血管收缩。
But there exits some problems due to the constricts of these theories and the complex phenomenon of irony 但是，现有的运用单一理论对反语解释的研究方法，由于理论本身的局限性和反语现象的复杂性，存在着一定的问题。
The children of whom you were bereaved will yet say in your ears , this place is too constricted for me ; make room for me that i may dwell here 20你丧失的儿女还要在你耳中说，这地方对我太窄，求你给我豫备地方居住。
Angina - constricting chest pain . it usually occurs under physical exertion e . g . while doing exercise , brisk walking or under emotional stress 心绞痛:通常在心脏负荷加重时才出现；如运动、情绪受压抑和快速行走等。
The main building is constricted in a rectangular shape , with the longer side oriented north and south and the shorter side oriented east and west 本商厦南面为商业步行街，东临运河，北面为居民区，西北东三面均有通道。
Their compact dimensions make them particularly suitable for service in extremely constricted structures where tension and compression forces are to be measured 他们紧凑小巧的外形特别适用于非常狭窄结构里的拉力和压缩力测量。
Their compact dimensions make them particularly suitable for service in extremely constricted structures where prestress and compression forces are to be measured 他们紧凑的尺寸使他们特别适合于测量非常狭窄的结构里的压力和预应力。
It would in fact mean helping the enemy , holding back , isolating and constricting the revolution , and bringing it to a low ebb and even to defeat 这样，就是在实际上帮助了敌人，而使革命停滞、孤立、缩孝降落，甚至走到失败的道路上去。
