請輸入中文或英文單字:
problem
英漢短句
transportation problem
運輸問題
stubborn problem
棘手的問題
social problem
社會問題
problem teaching
問題教學
problem space
問題空間
problem solving
問題解決
problem representation
問題表示
problem play
社會問題劇
problem child
問題兒童
problem behavior
問題行為
 

All human actions have one or more of these seven causes: chance, nature, compulsions, habit, reason, passion, desire.

Aristotle
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