电流收缩性

Polarity,or action and reaction,we meet in every parto nature;in darkness and light;in heat and cold;in the ebband low o waters;in male and emale;in the inspirationand expkation o plants and animals;in the equation oquantity and quality in the luids o the anima1body;in thesystole and diastole20 the heart;in the undulations o luids-arjld--o sound:in the centriuga1and centripeta1gravity3;inelectricity,galvanism,and chemica1ainity.

两极性或作用与反作用在自然界中随处可见：黑暗与光明、炎热与寒冷、潮落与潮涨、雄性与性、动植物的吸气与呼气、动物体内的体液数量与质量的均衡、心脏的收缩与舒张、液体的波动和声音的起伏、离心力与向心力；此外在电荷、电流和化学的亲和性上也不难发现这点。

Pupils dilate, arteries constrict, core temperature rises, heart races, blood pressure skyrockets, respiration becomes rapid and shallow, the brain fires bursts of electrical impulses from nowhere to nowhere, and secretions spit out of every gland, and the muscles tense and spasm like you're lifting three times your body weight.

瞳孔放大、动脉收缩、体温上升、心跳加快、血压想火箭一样上升、呼吸急促，大脑到处是因为电流脉冲产生的小火花，你所有的腺体都开始产生分泌物，然后向你在举三倍于你体重的东西时一样痉挛。性事粗暴的，丑陋的而且肮脏的。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。