Once the shell and membranes are added, the organism enjoys a protected location . 一旦蛋壳和壳模加上后、里面的微生物便受到它们的保护。
She wanted to break it and turn the shell into a dish from which her husband could eat . 她想把它弄开，用椰子壳做成碟子给丈夫盛东西吃。
This could occur as a result of some structural instability or looseness in the shell . 当外壳产生某些结构不稳定或松动时，就能产生这种情况。
The shell of an electrical appliance is grounded by attaching it with a wire to a gas or water pipe . 一个电器的外壳接地是用一根导线把它联到煤气或水管上。
A particle inside the shell is drawn equally in all directions and experiences no force at all。 在球壳内部的质点，因被对等地吸引向各个方向，所以完全没有感受到力。
At last ralph induced him to hold the shell but then the blow of laughter had taken away the child's voice . 拉尔夫示意他拿起海螺，可随之一阵笑声淹没了小男孩的声音。
The mineral of the shell is almost pure calcium carbonate, with some magnesium, formed of radiating crystals . 蛋壳的矿物质几乎为纯碳酸钙，还有一些镁，形成放射状结晶。
The russian dropped the shell to the ground and sprinted out of the park as if pursued by the furies . 那个俄国人把炮弹扔到地上，拔腿冲出公园，好象有洪水猛兽在追他一样。
The compatible boundary conditions are evidently uniform tractions applied on the inner and outer surfaces of the shell . 可相容的边值条件显然是作用在球壳的内表面和外表面上的均匀曳力。
The motion of the shell due to an impulsive pressure may be examined in the same fashion as in the case of the cylinder problem . 由脉冲式的压强引起的球壳的运动，可以按照在圆管问题中所用的同一方式来进行分析。
