测试完成后﹐沾到测试垫上的颜色及样办的脱色的程度会以灰尺评估级别。
After testing, any staining that has occurred on the test pads and the colour change are assessed against a Grey Scales.
大致在同一时期，阿拉斯加州的弗兰格尔山脉出现了大规模的火山爆发，这个地区遂被深达一英尺的怀特河火山灰所覆盖。
Around the same time, a massive volcanic eruption in the Wrangell Mountains in Alaska occurred, blanketing the area in a layer of ash, up to a foot deep, called the White River tephra.
他转身一看，看见一只7英尺高的灰熊向他冲来。
He turned to look. He saw a 7-foot grizzly bear charge towards him.
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