But as it scales up, it is facing challenges on several fronts.

但随着方案升级，在许多方面面临挑战。

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Primary efficacy measures were the 6-minute walking distance (6mwd) test, change in New York Heart Association functional class and several standard dyspnoea rating scales.

主要有效评估是6分钟步行距离(6mwd)测试，纽约心脏协会功能级别改变以及几种标准呼吸困难等级评分。

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The paper calls an assemblage of faults that have same cause of formation, same age, different scales, trends and strikes as a rift system, one rift system can include several fault systems.

本文将同一成因、同一时期、不同级别、不同倾向、不同走向断裂的集合体称为一个断裂体系，一个断裂体系可以包括几个断裂系统。

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Tornados are rated on several scales for strength based either on wind speed, pressure drop, or damaged caused, but the updated Enhanced Fujita Scale is the presently accepted scale in the United States.

FORBES: Tornados and Nukes -- How Big Can They Get?

The researchers administered several rating scales to both groups showing that the Internet over-users were also more psychiatrically symptomatic, with elevated levels of anxiety or phobias, and with significantly more problematic family backgrounds.

FORBES: Here's How Brian Williams and Rock Center Got the Science Of So-Called 'Internet Addiction' Really, Really Wrong

"When the fishermen finish from the sea they bring fish to the shop, so I asked them, whenever they want to sell the big fishes to remove the fish scales and then I collect them like that for several months, " said Adegbe.

CNN: Green is this season's color at Nigeria Fashion Week