producing desired results through effective and efficient use of time, resources, and effort
有效和高效
(of a system or machine) achieving maximum productivity without wasting much time, effort, or money
有效的
offering assistance or support, making tasks easier or problems more manageable for others
有帮助的
(of an author, artist, etc.) having a high level of productivity or creativity, especially in producing a large quantity of work or ideas
多产的
capable of producing a lot of profit or earning a great amount of money for someone
有利可图的
not producing desired results or outcomes, often wasting time, resources, or effort
无果的
not able to achieve maximum productivity or desired results with minimum waste of energy, money, or time
无效的
not providing any assistance or useful help in making a situation better or easier
无益的