不定期更新英语

English Translation: attention please, be not regular updates

定期更新 updated periodically Office Online 上的搜索索引也会定期更新，以帮助您查找所需的内容。The search index on Office Online is also updated periodically to help you find what you′re looking for

stay tuned Updated from time to time

update periodically

cycle renovate

更新update, renew不断更新update continuously, continuous renewal

periodical update定期 更新