Group (U V W Y Z) - Spelling Practices

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(1) a. (不舒适的,忧虑的,着急的) not easy; difficult; restless; disturbed by pain, anxiety
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(2) a. (没有说出的,数不清的) not told; not related; not revealed
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(3) n. (保养,保养费) act of keeping up, or maintaining; maintenance
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(4) v. Syn. utilize(利用,使用) make useful; find a practical use for; utilize
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(5) n. (有效性,合法性) quality of having legal force or effectiveness
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(6) n. (活门,阀) device or structure for controlling the flow of a fluid 
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(7) n. (虚荣,自负) quality or state of being vain; emptiness; feelings of excessive pride; conceit
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(8) a. (不同的,另一种形式的) varying in from, character, or the like; variable; different; diverse.
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(9) n. (素食者) someone who doesn't eat meat or fish usually for religious or moral reasons
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(10) v. (崇敬) treat with great respect and deference; consider hallowed or be in awe of