许多理论都标榜以单一的原因解释生长.Many theories purport to explain growth in terms of a single cause.所有喇叭都接在单一的扩音器上.All the speakers hook up to a single amplifier.单一的 、 孤立的磁极从来未找到.A single, isolated magnetic pole has never been found....
They have purged thousands from the upper levels of the civil service.他们从上层文职部门清除了上千名公务员。They move freely from one department to another as they ascend the civil service ladder.随着仕途晋升，他们可以在部门间随意调动。When Dutch colonial rul...