Shell script to run applications on MAC.

在Mac上运行应用程序的命令脚本。

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Usually, a designer would first work on the home page of the site, after which a basic shell is created for the inner pages.

通常，设计师会首先在网站的主页上下功夫，这之后，关于内部网页的一个基本的外壳就建立起来了。

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A marine biologist says he has discovered a newcrab species off the coast of southern Taiwan that looks like astrawberry with small white bumps on its red shell.

一位台湾海洋生物学者宣布他在台湾南部海岸发现了一个新的螃蟹物种，这种螃蟹背部的红壳带有白色小点，看上去很像草莓。

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The other main difference that we're really going to get to today is that in multi-electron atoms, orbital energies depend not just on the shell, which is what we saw before, not just on the value of n, but also on the angular momentum quantum l number. So they also depend on the sub-shell or l.

我们今天要讨论的,另一个很重要的区别就是,在多电子原子中，轨道能力不仅仅依赖于，我们以前看到的外层，不仅仅依赖于n的值，而是与角动量量子数也有关系,所以它们也依赖于亚外层或者。

麻省理工公开课 - 化学原理课程节选

"How the sound reflects off this reflecting surface with this composite object on it - which is pretty big and has a cloaking shell on it - really reflects... just like a flat surface does, " Dr Cummer said.

BBC: Acoustic 'cloaking device' shields objects from sound

Although scientists have long recognised that mid latitudes were warmer when dinosaurs walked the Earth, some researchers have held to the view - partly based on the previous shell data - that different ocean currents must have operated at the time, leading to warmer polar temperatures but, crucially, cooler tropical temperatures.

BBC: Dinosaurs felt the heat

Aquaculture techniques produce more uniform oysters, allowing growers to charge more for them on the half-shell market.

WSJ: Planting Seeds for a Better Oyster Harvest