1 a. used to show that what you are saying is expected or already known and so not surprising b. also 又作 used to say yes or to give permission politely c. also 又作 used to emphasize that what you are saying is true or correct 当然〔用于强调你所说的是真的或正确的〕 informal spoken spoken
of course course course
3 a. a series of lessons in a particular subject b. a period of study in a particular subject, especially at university is never followed by ‘of’. course不可跟 of 连用 C | AmE BrE BrE AmE
EDUCATION
教育
5 the usual or natural way that something changes, develops, or is done 自然的进展; 通常的过程 singular 单数
DEVELOPMENT
发展
8 the planned direction taken by a boat or plane to reach a place 〔船或飞机的〕航向 C usually singular 一般用单数, U
DIRECTION
方向
12 an amount of medicine or medical treatment that you have regularly for a specific period of time [尤英]
疗程 C | especially BrE
MEDICAL TREATMENT
医治
一个抗生素疗程