派生词是alertness，名词词性，意思是警惕，例如： 1.The presence of non-task-oriented ideas is a sign of broad interest, concern, and alertness on the part of the employees.一些非有关部门工作的建议的产生，标志了在部分职工中的广泛兴趣、机智和关心企业的精神素质。 2.She also said the alertness will change according...
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