competent
/ˈkɔmpɪtənt; `kɑmpətənt/ adj
1 ~ (as/at/in sth); ~ (to do sth) (of people) having the necessary ability, authority, skill, knowledge, etc （指人）有能力、 权力、 技能、 知识等的; 能胜任的; 能干的
a highly competent driver 技术高超的司机
competent at/in one's work 能胜任工作的
He's not competent to look after young children. 他没有看小孩的本事.
2 quite good, but not excellent 不错的（但并不出色）
a competent piece of work 良好的作品
The novel may be a best seller, but it's no more than a competent piece of writing. 这部小说就算能畅销, 也不过是平平之作.