When swabs from surfaces reveal stratospheric levels of bacteria, up go howls of disapproval and in comes the industrial cleaning equipment.

当她们用试纸检测出表面的细菌水平含量时，不满意的咆哮之后便是工业化清洗设备的登场。

youdao

Wear particles or debris can be seen as the product of the removal of material from surfaces in relative motion, especially when a machine enters an abnormal wear mode.

磨损颗粒，也叫碎屑，是从相对运动的两个物体表面，特别是当机器进入一种超常的磨损模式时脱落的材料碎屑。

youdao

Heavier isotopes tend to be left behind when water evaporates from the ocean surfaces, the remaining ocean water becomes progressively enriched in oxygen 18.

当水从海洋表面蒸发时，往往会留下较重的同位素，所以剩余的海水会逐渐富含氧18这种同位素。

youdao

On the large paper surfaces he pieced together, he drew pictures using colors he made from crushed pencils and crayons.

VOA: special.2010.04.14

International law bars any nation or state from claiming lunar surfaces.

VOA: special.2010.03.02

Indeed, from a corner viewpoint our eye moves up from planar surfaces to solid volumes in an elegant juxtaposition of horizontal, vertical, diagonal and rounded elements.

WSJ: Prim Grandeur, Elegant Geometries | Charles Bulfinch | Lancaster Meetinghouse | By John Wilmerding

V4, where the light reflected from a surface is compared with that reflected from surrounding surfaces, in order to control for relative rather than absolute brightness.

ECONOMIST: The biology of art | The

Grey leather with a graphically applied grain is used on the backs of the front seats, among other places, and continues the idea of patterns flowing over from other surfaces.

ENGADGET: Mercedes-Benz GLA concept puts laser projectors in headlights, redefines SUV