Group (E F) - Spelling Practices

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(1) a. (生态的,生态学的) of or relating to the science of ecology; characterized by the interdependence of living organisms in an environment
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(2) a. Syn. thrifty; saving(经济的,节俭的) thrifty; saving; using the minimum of time or resources necessary for effectiveness
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(3) a. (电磁的) pertaining to or exhibiting magnetism produced by electric charge in motion
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(4) n. (被雇用,雇用,使用) act of employing or using; work in which one is engaged; occupation
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(5) v. Syn. picture; visualize(想象,预想) picture in the mind; imagine
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(6) n. Syn. era(时代) particular period of history, especially one considered remarkable
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(7) a. Syn. racial(种族的) relating to races; group of people sharing common racial, national, or religious heritage
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(8) v. (不正当的利用,开发) make use of, sometimes unjustly
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(9) v. Syn. stretch; prolong(延长,扩大) open or straighten something out; unbend; prolong
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(10) a. Syn. weak; limp(优柔寡断的性格,软弱的,没气力的) weak; lacking firmness