Swimming more than 1, 510 feet (460 meters) below the surface of the Gulf of Mexico, Ampelisca mississippiana is a recently identified species of a class of small crustaceans called amphipods.

Ampelisca mississippiana，刚刚被鉴定为一种片脚类——一类小型的甲壳类，正在墨西哥湾超过1510英尺（460米）的水下游泳。

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This approach reportedly can provide a Class A surface.

据报道，这种方法能够实现A级表面精度。

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The invention relates to a surface processing method for a shell of an electronic device, which belongs to the electromechanical class.

本发明涉及一种电子装置外壳的表面处理方法，属于机电类。

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The kinds of proteins that sit on a cell surface and form adhesion junctions with neighboring cells, that's one class of cells on the surface.

这些蛋白位于细胞表面,和相邻的细胞建立粘附链接,这是细胞的一个种类

耶鲁公开课 - 生物医学工程探索课程节选

While this is a significant sum, to be sure, if an apples- to-apples comparison were made, the price of purchasing and operating modern fighter aircraft wings or a class of surface ships or submarines would significantly exceed that associated with a ground-based NMD system.

CENTERFORSECURITYPOLICY: Sea-Based Missile Defenses -- for the Allies, for the U.S.

He's a class player on this surface.

BBC: SPORT | Tennis | Gaudio too good for Hewitt

Two pounds is still lighter than the Acer Iconia W700, which weighs 2.09 pounds, so for a product in this class, the Surface Pro might even pass for compact.

ENGADGET: Microsoft Surface Pro hands-on Hands-on