九年义务教育的英文：
nine-year compulsory education
The goal in the effort to make nine-year compulsory education basically universal has been attained.
实现基本普及九年义务教育
num. 九，九个；第九
n. 九，九个
adj. 九的，九个的
It is nine now.
现在九点了。
A stitch in time save nine.
一针及时省九针。
Nine plus one is a decade.
9加1是10。
n. 年；学年，年度；年级学生；年龄；时期；很久；一年时间
Year succeeds to year.
年复一年。
This year is a banner year for crops.
今年是个丰年。
Year after year went past.
一年又一年过去了。
adj. 义务的；必修的；强制的，强迫的；规定动作的
Is the requirement compulsory?
必须按这个需求做吗？
Is French compulsory or optional?
法语是必修课还是选修课？
Not required or compulsory;optional.
任意的不被要求或强制的；可选择的