这四枚新邮票是为了纪念英国天文协会成立100周年而发行的。The four new stamps mark the 100th anniversary of the British Astronomical Association.在历史的年代数目和天文年代数目之间存在差别.There are differences between historical and astronomical numbering of years.数学材料是...
And we has also found some especial rules on the moving of Chinese economic barycenter.文章还发现,中国经济重心的迁移存在几个特殊的规律.Aibihu Lake is typical arid zone lake, it has arid zone ecosystem of especial everglade.艾比湖是典型的干旱区湖泊, 具有特殊湿地...
He edged the tool into the crevice.他把刀具插进裂缝里.a crevice in a wall墙上的裂缝...a huge boulder with rare ferns growing in every crevice.裂缝中全长着罕见蕨类植物的巨石I saw a plant growing out of a crevice in the wall.我看到墙缝里长出一棵草来.And a roach s...