带铁

The Negro prisoner was forced to wear a ball and chain attached to one of his ankle s.

那个黑人囚犯被迫在一只脚上带上了系有铁球的脚链。

"The material mix in this belt is most reminiscent of the stuff found in lava flows on Earth," Lisse said. I thought of Mauna Kea material when I first saw the dust composition in this system - it contains raw rock and it's abundant in iron sulfides , which are similar to fool's gold .

& &这个尘埃巨带中的混合物质使人想到地球上熔岩流中发现的物质，&利斯说，&第一次看见这个恒星系统中尘埃的组成成分时，我想起了夏威夷莫纳克亚山上的物质——其中包含原岩，富有含铁硫化物，类似于黄铁矿。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。