请: request; ask保持: keep; hold; retain; maintain ...通畅: unobstructed; clear; free; o ...保持通畅: fire escape keeclear; fire exit only注意保持通畅: caution keeclear安全出口,保持通畅: fire escape to be clear of obstruction; fire escape keeclear; fire escape, keeclear保持通电: energized for holdig保持通讯: keep in communication with静脉点滴维持通畅: ivko intravenous keeopen请保持安静: please keequiet; quiet please请保持联络: who's calling keein touch please水土保持通报: bulletin of soil and water conservation保持大便通畅: keep a normal bowel movement保持静脉通畅: keep vein open打开窗门保持通风: to stop virus transmission请保持办公室整洁: please keethis office tidy and use the bins provided; please wait here for enquiries请保持场内清洁: please keethe area clean/ don't litter; please keethe area clean/don’t litter请保持场所内清洁: please keethe area clean/ don't litter请保持过道畅通: please keegateways clear; please retain your ticket for inspection请保持门的清洁: please keeclear of the door请保持门口畅通: please keeclear of the door; please telephone for opening times and admission charges正在开会,请保持安静: meeting in progre , quiet please; meeting in progress quiet please; meeting in progress, quiet please持通: mochimichi通畅: 1.(运行无阻) unobstructed; clear; free; open 大便通畅 free movement of the bowels; 道路通畅。 the road is clear.2.(流畅) easy and smooth 他文笔通畅。 he writes easily and smoothly请保持办公室整洁,使用所提供的垃圾箱: please keep this office tidy and use the bi provided; please keep this office tidy and use the bins provided