atmosphere
atmosphere/ˈætməsfiə/n.［u］1.大气层(= the air surrounding the earth): Man must stop polluting the earth’s atmosphere.人类必须停止对地球大气层的污染。They have carried out ano···
atom/atomic
atom/ˈætəm/n.［c］1.原子：to split atoms分裂原子A molecule of water is made up of two atoms of hydrogen and one atom of oxygen.一个水分子是由两个氢原子和一个氧原子组成的。2.微量···
atrocity
atrocity/əˈtrɔsiti/n.[c]残暴，暴行；凶恶：the atrocities of the Nazis纳粹党徒的暴行These people are guilty of acts of great atrocity.这些人犯有令人发指的暴行。
attach
attach/əˈtætʃ/vt.1.系，贴，连接：She attached a chain to the dog’s collar.她把一根链子拴在狗的脖子上。Was the label attached to your luggage?你的行李上贴标签了吗? 2.使…成为一···
attack
attack/əˈtæk/ I.vi.&vt.进攻，攻击；抨击：attack the enemy进攻敌人；be attacked with a disease遭受疾病的折磨‖II.n.［c］袭击，攻击；(疾病的)袭击：make/launch an attack on (up···
attain
attain/əˈtein/vt.达到(目的)，取得(成就)：attain our objectives/goals达到我们的目标；attain the highest grade达到最高等级She attained her ambition of becoming a pilot.她实现了成为···
attempt
attempt/əˈtempt/ I.vt.企图，试图：attempt to escape企图逃走；attempt to destroy all the factories妄图毁掉所有的工厂；attempt a difficult task试图做一件困难的事情；attempt many sc···
attend/attendance/attendant
attend/əˈtend/vt.&vi.1.到场；出席；参加；上(学)：The lectures were well attended.很多人都来听这些讲演。attend school (church)上学(教堂)；attend a meeting (lecture)出席会议(演···
attention/attentive/attentively
attention/əˈtenʃən/n.［u］1.注意,专心：Give your whole attention to what you’re doing.将全部注意力用于你所做的事。pay attention (to)注意…：No attention was paid to my advice.···
