1.obstacle 障碍 Most competition cars will only roll over if they hit an obstacle. 大多数赛车只有在撞上障碍物时才会翻车s*IQ57xnV#。 2.deem 认为 French and German were deemed essential 法语和德语被认为是必不可少的.NNc*pk1Wx。 3.pose 造成 This could pose a threat to jobs in the coal industry 这可能会给煤炭产业的就业造成威胁#Ni,;&PW+;。 4.drop out 退出 He'd dropped out of high school at the age of 16 他16岁的时候就从中学退学了BNOI1]j%]ixFul%P。 [WEEkEwEpoWW#8;NXia