noun🔗Share天花板，顶棚。 The overhead closure of a room."the dining room had an ornate ceiling"餐厅的顶棚装饰得很华丽。architecturebuildingpartChat with AIVocabulary GamePractice Reading
noun🔗Share上限, 顶峰。 The upper limit of an object or action."The company set ceilings on spending for each department to help manage the budget. "为了更好地管理预算，公司为每个部门设定了支出上限。propertybuildingChat with AIVocabulary GamePractice Reading
noun🔗Share升限，最高飞行高度 The highest altitude at which an aircraft can safely maintain flight."The airplane's ceilings were lowered today due to the storm, meaning it couldn't fly as high. "由于今天有暴风雨，飞机的升限降低了，这意味着它不能飞那么高了。technicalvehiclemilitaryChat with AIVocabulary GamePractice Reading
noun🔗Share云高，能见云高 The measurement of visible distance from ground or sea level to an overcast cloud cover; under a clear sky, the ceiling measurement is identified as "unlimited.""The pilot reported a ceiling of 2,000 feet, meaning the plane could safely fly. "飞行员报告云高两千英尺，这意味着飞机可以安全飞行。weathernauticalspaceenvironmentChat with AIVocabulary GamePractice Reading
noun🔗Share向上取整，天花板。 The smallest integer greater than or equal to a given number."the ceiling of 4.5 is 5, the ceiling of -4.5 is -4" 5的向上取整是5，也就是它的天花板数是5；-4.5的向上取整是-4，也就是它的天花板数是-4。 mathnumberChat with AIVocabulary GamePractice Reading
noun🔗Share内舱壁，船内板. The inner planking of a vessel."During the ship restoration, the workers carefully replaced the damaged ceilings of the old wooden hull. "在船只修复期间，工人们小心地更换了旧木船体上损坏的内舱壁/船内板。nauticalsailingbuildingarchitectureChat with AIVocabulary GamePractice Reading
