1.settle in 定居
I wanted to settle in America, live like any other citizen, and have more opportunities for my family.
我希望在美国定居，像其他公民一样生活，为我的家人提供更多机会。

2.contend with 与…作斗争
Developing nations have always had to contend with infectious diseases.
发展中国家常常要与传染性疾病作斗争。

3.back and forth 来回
The pendulum swings back and forth.
这就像单摆一样来回摆动。

4.covered in blood 满身鲜血
I was covered in blood and could feel it dripping over me.
我全身是血，甚至我还可以感觉到血在慢慢的渗出。