Iron burning cannot happen since it takes energy to do so . therefore , as more and more iron is formed in the core , the pressure there decreases rapidly 由于继续燃烧铁的核反应反而需要能量，所以恒星核心产生能量的能力便会戛然而止，核心的压力骤降。
After the soviet union collapsed , so did the brown bear population of the kamchatka peninsula . in this untamed frontier , poaching keeps the bears at risk 苏联解体以后，堪察加半岛的棕熊数量也出现了骤降。在这块蛮荒的边疆地带，偷猎让棕熊处于一个危险的境地。
If we do not make that transition , we may be cursed not just with uneconomic growth but with an ecological catastrophe that would sharply lower living standards 如果我们坚持不改变，到头来可能不只得面对划不来的成长，还会因为生态浩劫而导致全人类的生活品质骤降。
The method has perfect effect on calculating the voltage swell and sag , voltage notch and frequency deviation . numerous simulations also prove the effectiveness of the method 对于电压骤升骤降、电压缺口以及频率偏移，该计算方法也有很好的效果，大量的仿真结果证明了这一点。
People suffering from chronic illnesses such as heart disease , asthma , or bronchitis , should visit their doctor for a physical examination when the weather turns cold 呼吸道疾病、心脏病、哮喘等慢性疾病患者在天气骤降前必须先到医生处检查身体，取足够药物定时服用，以防万一。
He alternately employs such contrasts as between light and shade between largeness and diminution between openness and seclusion and between elevation and depression 园林的主人巧妙的运用对比的手法来制造与众不同的视觉效果：例如明亮与灰暗，放大与缩小，开阔与隐居，陡升与骤降等等。
Influenced by cold air arriving at jinan recently , the relatively high temperature of the spring produced beautiful scene of steamy vapours as the steam rose against cold air 近日，受冷空气影响济南气温骤降，泉水温度大大高于气温，蒸发的水汽上升遇冷形成“云雾” ，再现“云雾润蒸”景观。
The next two days saw a sharp drop in temperature in hong kong , and the fellow initiates again set out for the yen - chow street overpass to distribute thick cotton - padded coats and scarves to more street people 往后的两天气温骤降，同修再次前往钦州街天桥一带，为更多的露宿者派发厚棉袄和颈巾。
Speical attention should be paid to prevention of inspiratory regurgitation , supine hopotension syndrome , and cyclic fluctuation caused by sudden reduced abdomenal pressure 结论麻醉方法以全麻为宜，术中应预防误吸，仰卧位低血压综合征等，加强呼吸和循环管理，重点防止因腹压骤降所引起的循环波动。
