B
生物医药大词典
by MedSci
菜单
词典
分类
百科
诗词
背单词
英文名
DeepEvidence ↗
确认登录状态…
例句 /
In 1968, prototype quartz crystal watches were introduced.
In 1968, prototype quartz crystal watches were introduced.
1968年推出样机石英手表.