... 用力气 exhale exhale 白费力气 bite on granite; flog a dead horse; flogged a dead horse; in vain; mockery; to ... 不费力气的 effortless ...
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培 训 日 程 ... Equipment sustainability. Contingency planning. 设备的稳定性，应付突发事件的计划 Flood awareness. 洪水警报 Active-service tests of equipment functions. 对设备性能的主动测试 ...
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