- 密切相关 mìqièxiāngguān closely relatedto be closely related; to have a strong connection
- 密切接触者 mìqièjiēchùzhě close contacta person who has been in close physical proximity with an infected individual, especially used in the context of epidemiology
- 密切配合 mìqièpèihé close cooperationTo act in close coordination; to work together closely.
- 密切注视 mìqièzhùshì to watch closelyto watch or monitor something with close attention
- 密切注意 mìqièzhùyì to pay close attentionto pay close attention to something; to watch closely
- 密切相连 mìqièxiānglián closely relatedto be closely related; to be intimately linked
