- 密切相关 mìqièxiāngguān closely related
- 密切接触者 mìqièjiēchùzhě close contact(epidemiology) close contact
- 密切注意 mìqièzhùyì watch closelyto pay close attention to something
- 密切注视 mìqièzhùshì monitorto watch closely; to pay close attention to
- 密切相连 mìqièxiānglián interlinkedto be closely connected or related; to relate closely
