在经济繁荣时期,劳动力和材料成本不断上升,金矿的利润缩水,直至无利可图,此时,矿主会放弃开采。
The mounting labor and material costs of good times cut down his margin until it disappears and he abandons his mine.
语言学家想知道,语言究竟是怎样在大脑中运作的。而图卡诺语的实据性等就是他们的研究材料。
Linguists ask precisely how language works in the brain, and examples such as Tuyuca's evidentiality are their raw material.
图8:用于确认及组织过程和项目数据的过多的材料。
Figure 8: a plethora of materials is used for identification and organizing of process and project data.
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