Group (E) - Spelling Practices

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(1) a. Syn. irregular; odd; whimsical; bizarre(古怪的,奇怪的) departing from a recognized, conventional, or established norm or pattern
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(2) n. (回声,发出回声,重复) sound reflected from an opposing surface and repeated to the ear; repetition of a sound
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(3) n. (漩涡) swirling current of water, air; flow in circular current
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(4) a. (较老的) somewhat old; advanced beyond middle age
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(5) n. (电子学,电子工业) branch of physics that deals with the behavior of electrons; electronic devices
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(6) a. Syn. entitled; qualified; suitable(合格的,有资格的) qualified; desirable and worthy of choice, especially for marriage
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(7) v. (发出,放射) give off; send out; give out as sound
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(8) a. (经验主义) derived from experiment and observation rather than theory
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(9) n. (酶) any of several complex proteins that are produced by cells and act as catalysts in specific biochemical reactions 
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(10) n. Syn. plague(传染病,流行病) outbreak of a contagious disease that spreads rapidly and widely; widely prevalent