高尔夫练习场上的垫子是用橡胶制成的，非常非常硬，容易使你受伤。
The MATS that you see at driving ranges that are made of rubber are very, very firm, and they predispose you to having injuries.
尼布甲尼撒曾使他指着神起誓，他却背叛，强项硬心，不归服耶和华以色列的神。
He also rebelled against King Nebuchadnezzar, who had made him take an oath in God's name. He became stiff-necked and hardened his heart and would not turn to the Lord, the God of Israel.
使软木更硬更耐用是利于环保的解决方法之一，一家名为科博尼的挪威公司已经在这方面取得成功。
One way out of this problem would be an environmentally friendly way of making softwood harder and more durable-something that a Norwegian company called Kebony has now achieved.
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