保 護 區 bǎo hù qū : conservation district

保 留 bǎo liú : continue to have; retain; hold back; reserve; reservations; hold back (approval or acceptance); to preserve; maintain

保 商 bǎo shāng : preservation of soil moisture

保 溫 bǎo wēn : heat preservation

觀 測 guān cè : (scientific, etc) observation; to observe

觀 測 衛 星 guān cè wèi xīng : observation satellite

預 約 yù yāo : reservation; reserve