(about a person, company, etc.) performing at the rate or level that is expected (人、公司等)达到应有的速度,达标◆She aims to get new employees up to speed as quickly as possible. 她的目标是尽快将新员工培训合格。
having the most recent and accurate information or knowledge 了解最新情况;跟上形势◆Are you up to speed yet on the latest developments? 你对最新进展情况了解吗?