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Used to indicate the time limit or cutoff point, meaning "up to" or "as of" a certain date or time. It is common in reports, news, and statistics.
"数据显示，截至2025年12月，学而思AI助手“小思”累计激活超10亿次。"
"截至2025年12月，用户的周平均活跃率保持在约80%。"
较 is a formal written way to express comparison, similar to "compared with" or "than." It often appears in business, news, and academic Chinese.
"综合性能较前代提升18%。"
"该产品综合性能较前代更强。"
约 means "about/approximately," and 为 is a formal verb meaning "to be." Together, 约为 is a formal expression used to give estimated numbers or measured results.
"日均使用时长约为1小时。"
"用户的周平均活跃率保持在约80%。"
在 is used to indicate location, time, or context. In formal news writing, 在……上 often means "at" an event or occasion, and 在……中 can mean "in" a process or situation.
"在腾讯云上海峰会上，腾讯云首次对外发布Agent产品全景图。"
"用户的周平均活跃率保持在约80%。"
涵盖 means "to cover/include." It is often followed by a list, and 等 is used to show that the list is not complete, similar to "etc." This pattern is common in formal descriptions.
"涵盖个人提效、办公提效、研发提效等多场景。"
"开放涵盖腾讯自研Skills、开源SkillsHub及微信、企微等在内的丰富技能生态。"
(used after an attribute when it modifies a noun)
to release
product
by the time; when; till
surname Yun
month
up to
(of sb or sth) to be (located) at
(computing) to upgrade
scene; scenario; situation; setting
day
to get news
variant of 為|为[wei2]
to include
treaty
to give
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