The best characteristic can be used in the complexed sand containing 50% old sand.

该粘合剂最大特点是能回用旧砂，回用的比例可达50%。

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Since then, the old man furtively fetched the gold sand once every half a month or so, so he became rich soon.

从此，老汉过个十天半月就偷偷来取一次金砂，日子很快富裕起来。

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However, the foundry plant of tsinghua university lacks old sand with high temperature and can not carry out test of cooling control.

但因清华大学铸造厂缺乏温度较高的旧砂，以致无法进行降温控制效果的试验。

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They are believed to be 60 million to 80 million years old, made of sand pushed inland over the eons from the coast by Atlantic Ocean winds that sweep onshore 80 kilometers to the west.

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Other features in Denbighshire which have been given QR codes include the Clive Engine House at Dyserth, Rhyl lifeboat, the Llangollen international pavilion, Gronant sand dunes and the old jail at Ruthin.

BBC: North East Wales

However, his drive found sand and the 48-year-old American had to settle for a bogey and a final round of 69 that left him tied at 14-under 270 with Hoffman who had started the fourth round two shots off the lead.

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