explicit unary operator

例句：

1. 1. The teacher explained theproblem clearly to the students.
   老师向学生们清楚地解释了这个问题。
2. 2. The researcher conducted anexplicit analysis of the data.
   研究员对数据进行了明确的分析。
3. 3. Theauthor's explicit intention was to make thestory more engaging.
   作者明确的意图是使故事更吸引人。