1. the mineral siderite when occurring mixed with clay, sand, and considerable carbonaceous matter and frequently being associated with coal
black band 例句
英汉例句
A man with a black band around his arm stood alone.
译一个手臂上缠着黑色带子的男人独自站着。
He wore a black band on the left sleeve of his jacket.
他在夹克衫的左袖上戴了一条黑箍儿。
On the neck of the mummified head, researchers found a black band of carbon, which matched the ingredients that the king's embalmer had reported using on the body to absorb decomposition odors.
在木乃伊的头部,研究者发现了一块黑炭,刚好是国王的尸体防腐者用来吸收腐败气体的原料。
Grayish old world turtle dove with a black band around the neck; often caged.
东半球颈上有黑圈的灰色斑鸠;经常被关在笼中。
A yellow and olive warbler (Oporornis philadelphia) of eastern North America, having a bluish gray hood set off by a black band on its breast.