EXAMPLE: Everyone in the office was careful not to let on about the party planned for their manager's birthday.
办公室里的每个人都在小心翼翼地保守为经理举行生日聚会的秘密。
今日单词
primacy
中文释义
首要地位（名词，正式用语）
英文释义
(noun, FORMAL) The state of being first or most important.
例句
EXAMPLE: The economic primacy of heavy industry may be challenged by information technologies in the future.
重工业在经济上的首要地位未来可能受到信息技术的挑战。
今日短语
to let on
中文释义
泄露秘密（非正式用语）
英文释义
(INFORMAL) To reveal a secret.
例句
EXAMPLE: Everyone in the office was careful not to let on about the party planned for their manager's birthday.
办公室里的每个人都在小心翼翼地保守为经理举行生日聚会的秘密。