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 /
A pall of smoke hung over the town.
A pall of smoke hung over the town.
市镇上空笼罩着一层烟幕。