1.traffic jams 交通拥堵
Stationary cars in traffic jams cause a great deal of pollution
交通堵塞中静止不动的汽车产生了大量污染。
2.behind the curtain 秘密地,在幕后
He was carrying out the plan behind the curtain.
他在秘密地执行那项计划。
3.make a difference 有影响
Your support will certainly make a difference in my cause.
你的支持肯定对我的事业很有影响。
4.in a sense 从某种程度上
In buying your children all these things, you are in a sense buying them off.
给孩子买下所有这些东西,从某种意义上说你是在收买他们。