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elementary school 小学
be equal to 等同于，相当于
expose to 暴露，接触
to some /a extent 从某种角度
far from 一点也不，根本不
fail to 没能做成…
at fault 有责任，有错误
federal authority 联邦政府
be filled with 充满
have to 必须得
homeland security 国土安全
be involved in 参与，从事
be judged on 按…评判，判断
lay stress on = focus on 强调，重视
meet one’s needs/standards 满足需要，符合标准
not…..but…..不是，而是
oil drilling= oil tapping= oil exploitation 开采石油
owing to/ due to / because of / thanks to 幸亏，由于，因为
oppose to 反对
make a point of 重视
