The reliability of mining technological systems has a notable impact on main economic and technical indices. especially when continuous or semi-continuous mining system is employed.

露天矿工艺系统可靠性对露天矿的主要技术经济指标有很大影响，特别是采用连续或半连续开采工艺时更是如此。

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A semi implicit three dimensional ocean circulation model is employed to simulate the tidal flow of Hangzhou Bay and Changjiang river estuary.

采用一种半隐式三维海洋紊流模型对杭州湾及长江口附近的潮流场进行了数值模拟。

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Many of those once employed as semi-skilled workers are now fighting for low-wage jobs. Change has been good for those at the very top.

很多曾以半技术性受雇的劳动者还在为一份低薪拼命工作，高端人才却享受着技术变革带来的好处。

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Semi-employed between finishing his studies and moving to England, he turned his hand to writing a history of the world for children.

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There are many semi-skilled workers employed there now on much better wages than they would earn as domestic helpers.

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Many of those once employed as semi-skilled workers are now fighting for low-wage jobs.

ECONOMIST: Economics Focus