查询词典 tread as if on thin ice -- to be very careful

The maritime space of the Arctic center is covered by sea ice all the time, while there are some seasonal sea ice in the other sea region , such as Barling sea on the Northern Pacific Ocean, the Okhotsk sea and some inner sea in Eurasia by comparing winter with summer for the Arctic sea ice extension.

通过冬夏季北极海冰面积的比较发现，北极中心海域常年为海冰所覆盖，其它海区如太平洋北部的白令海、鄂霍茨克海及欧亚大陆的一些内海存在季节性的海冰。

In addition, a metabolic inhibitor, actinomycin D has no effect on enzymatic activities of caspase-1/ICE-like and caspase-3/CPP-32/like proteases during Fas-mediated CD4〓T cell apoptosis. These results indicate that the appearance of caspase-1/ICE-like and caspase-3/CPP32-1ike proteases activities is a post-translational activation of these proteases. It is likely these caspases constituently express in a inactive form in the cytosol of CD4〓T lymphocytes. Once the rest SEB-responsive CD4〓T cells are restimulted, those inactive caspases such as caspase-1/ICE-like and caspase-3/CPP32-1ike proteases are sequentially cleaved to become active forms, and the apoptotic signal is transducted to downstream signaling molecules, Finally leads to CD4〓T cells apoptosis.

另外，通过代谢抑制剂放线菌素D对超抗原SEB诱导静息SEB应答〓细胞凋亡过程中Caspase成员酶活性变化的研究表明Caspase-1／ICE样，Caspase-3／CPP32样胱氨蛋白酶并非新合成的信号分子，很可能以无活性方式组成性表达于静息SEB应答〓细胞胞浆，在超抗原SEB再次刺激诱导〓细胞凋亡早期，先后顺序活化，借以传递凋亡信号到下游信号分子，诱导〓细胞凋亡。

Models are built according to the emersed part and floating part of the ice sheet, respectively. Bending moment distribution in the ice sheet is analyzed to determine where a bending failure may occur. The analytic solution of breaking length for ice sheet is obtained.

文中将冰排分为在斜面附近脱离水面部分和较远处漂浮于水面部分两个区域，建立了冰排因弯曲而发生破断的数学模型，根据弯矩分布分析了冰排可能的破断位置，从而得到冰排与斜面结构相互作用时的破断长度解析表达式。

The flood of Yellow River is always the serious trouble of Chinese, and ice flood disaster have the maximum influencing factors and the most complicated flooded theory, it was concluded with ancient adage "the ice flood burst and official innocence" and " estival flood easily prevented and ice flood hardly defended".

黄河的洪水问题一直是中华民族的心腹大患，而黄河冰凌灾害又是影响因素最多、成灾机理最复杂的一种灾害，从&凌汛决口，河官无罪&及&伏汛好抢，凌汛难防&的古谚语即可见一斑。

It was found that in the heat melting process of the ice layer, the ice melting rate history undergoes 3 stages:unmelting stage, accelerating melting stage, and decelerating melting stage, they are affected obviously by the heat load. The energy utilization effect in the ice melting process may be improved using variable heating.

研究表明，冰层热融过程中，融冰率变化经历未融、融化加速和融化减缓3个阶段，每个阶段受热负荷作用影响明显，若采用变负荷加热，可更有利于融冰过程能量利用的综合效果。

Such ice is much more prone to melting during the summer months than perennial, or multiyear, ice, which is thick and dense ice that has lasted through multiple cycles of thawing and refreezing.

与多年冰相比，当年冰在夏季更加容易融化，因为多年冰的冰层厚，密度大，是经过多年的反复融化和结冰才形成的。

Such ice is much more prone to melting during the summer months than perennial, or multiyear, ice, which is thick and dense ice that has lasted through multiple cycles of thawing and refreezing.

这类冰层在每年夏天融化的趋势远超过在一年中的其他时节，但是多年积累下来的终年冰会更厚实，密度更大，所以它们一般可以坚持若干个&消融-冻结&循环。

Such ice is much more prone to melting during the summer months than perennial, or multiyear, ice, which is thick and dense ice that has lasted through multiple cycles of thawing and refreezing.

据第一手观察资料和卫星影像显示，如今环绕在北极点周边的冰层在大多是在每年冬天的时新形成的新冰层。

Such ice is much more prone to melting during the summer months than perennial, or multiyear, ice, which is thick and dense ice that has lasted through multiple cycles of thawing and refreezing.

这种类型的冰相对于经过多年融化再结冰、厚实且密度较大的长年冰而言更容易在夏季融化。

Such ice is much more prone to melting during the summer months than perennial, or multiyear, ice, which is thick and dense ice that has lasted through multiple cycles of thawing and refreezing.

这样的冰比长时间处于固体状态或多年以前形成的冰更易于融化，后者又厚，又密实，且已经经历多次气温升降的循环过程

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。