year around mining的意思|示意

Shares in the world's giant mining companies have soared this year. Oil companies such as Brazil's Petrobras have doubled in value, while BP and Shell are around 20% above their March lows.

全球矿业巨头股价今年已经大幅上扬，如巴西石油公司之类的原油公司股价已经翻番，英国石油、壳牌等公司股价较3月份低点也已上扬超过20%。

Sand mining further erodes the coast, and ground water drainage to sustain human populations triggers land subsidence even as the sea level rises by around 5mm a year.

采砂业也在进一步侵蚀着河岸，而人类的地下水开采导致地面沉降，与此同时，海平面正以每年5毫米的速度上升。