hearting的用法和樣例：
例句
- We had better learn by heart as many sentence patterns as we can.
我們最好盡可能多背句型。 - Slowness of the heart rate, usually fewer than60 beats per minute in an adult human being.
心搏緩慢心律緩慢，通常指成人心跳低于60次每分鐘
不低于項目獨代撰寫，受著作權愛護，侵權商標必究
- 今早新詞匯
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