useful
英 ['ju?sf?l; -f(?)l]
美['jusfl]
- adj. 有用的，有益的；有帮助的
英英释意
- 1. being of use or service;
- "the girl felt motherly and useful"
- "a useful job"
- "a useful member of society"
- 2. of great importance or use or service;
- "useful information"
- "valuable advice"
- 3. capable of being turned to use or account;
- "useful applications of calculus"
- 4. having a useful function;
- "utilitarian steel tables"