求翻译：　　与此同时，市场持有黄金量也在持续增加，上周全球最大的黄金上市交易基金（ETF）是什么意思？

　　Meanwhile, the market also continues to increase in the amount of gold, last week, the world's largest gold ETF (ETF) Gold positions increase significantly--SPDR about 31 tons, indicating that investor confidence continues to return to the gold market. Statistics also show that gold ETF positions were in the second quarter increased by 45.6 tons, to 2155.3 tonnes, its biggest increase since second quarter of 2010. Among them, European gold ETF positions increased 29.2 tons, mainly because the European debt crisis prompted investors to buy gold spread risk.