The open cast method is an advanced stripping technology with low operation cost.
拉斗铲倒堆剥离是一种先进的开采工艺，机械化程度高，开采成本低。
They cast down their load and began to open the grave.
他们把东西卸下来，开始挖坟。
The captain of the boat cast off the line and we were soon out in open water.
船长解开绳缆，我侗很快就航行在开阔的水面上。
The captain of the boat cast off the line and we were soon out in open water.
船长解开绳缆，我侗很快就航行在开阔的水面上。
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