Only baseline data, they said, could show without a doubt that water was clean before drilling began.
他们声称,一些边缘的基准数据只是毫无疑问地表明开钻之前水是干净的。
There are also fears that any drilling could lead to oil spills which would be impossible to clean up amid the Arctic's broken sea ice.
还有人担心,任何钻探都可能导致石油泄漏,而散布在北极破碎的海冰中的石油不可能清理干净。
Tsung-yu of the polishing process, the mill rather than to stay bright and clean, according to Long, drilling, cutting, traces of polish, making regular rounded shape.
玉琮的抛光工艺上,磨垅光洁而不留据、钻、凿、磋的痕迹,使得器形浑圆规整。
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