1.
His iron gray hair was precisely parted and in place.
他铁灰色的头发在正当中分开，梳得整整齐齐。
2.
Her iron-gray hair was eked out by a curled false fringe that was proudly brown and disdained to match the rest of her hair.
她那铁灰色的头发中掺进了一抹惹眼的褐色假发，显得很不调和。
3.
The low, steel-grey sky and the wisps of mist created a permanent twilight.
低沉，铁灰色的天空夹杂着稀疏的雾气，呈现出朦朦胧胧的亮光。
4.
The riverbed contained by the dike was deep and broad, lined with iron-grey shingle.
被高堤嵌住的河床又宽又深，满盛着一川铁灰色的砾石。
5.
a common mineral (iron disulfide) that has a pale yellow color.
一种常见的矿物（二硫化铁），呈灰黄色。
6.
a greenish gray or black silicate of iron and aluminum.
一种绿灰色或黑色的铁和铝的硅酸盐矿物。
7.
4 colorways available: White/ Blue/ Purple and charcoal!
四种颜色:白色/蓝色/紫色以及铁灰色!!
8.
A silver - white to gray arsenic ore, essentially FeAsS.
砷黄铁矿一种银白色至灰色的砷矿石，尤指砷黄铁矿
9.
a rare reddish-gray mineral consisting of a copper iron germanium sulfide.
一种稀有的红灰色矿物，由铜、铁、锗的硫化物组成。
10.
Of a pale grayish or bluish green.
淡灰蓝色的，淡灰绿色的
11.
a fine, portly, middle-aged gentleman with iron-gray hair;
一位文雅、肥胖、满头铁灰色头发的中年绅士；
12.
Study of the Railway Passengers and Freight Prediction Based on the Gray Theory;
基于灰色理论的铁路客货运量预测研究
13.
Application of grey theory to predict railway transportation quantity;
灰色理论在铁路煤炭运输量预测中的应用
14.
Research on the grey forecast model to the railway passenger volume based on data pretreatment;
基于数据预处理的铁路客运量灰色预测模型
15.
Stochastic Grey System Model for Forecasting Passenger and Freight Railway Volume;
铁路客货运量预测的随机灰色系统模型
16.
Application of Grey Relavance Analysis in Technical and Economical Evaluation of Iron ore Resource;
灰色关联分析法在铁矿技术经济评价中的应用
17.
Grey Relational Analysis of Railway Transportation Enterprise s Competence;
影响铁路运输企业竞争力的灰色关联分析
18.
To Apply on Gray Theory in Ecological Risks Assessing for High-speed Railway
灰色理论在高速铁路生态风险评价中的应用