请高手帮忙中英互译几句话,语法正确,标准
问题描述：
请高手帮忙中英互译几句话,语法正确,标准
1.我恰好刚刚来这里
2.flip-top box 20class A cigarettes
3.我那个时侯以为,上了车的时候可以去补差价的,因为我上车很着急太匆忙了.
答
1.i happened to have just arrived here
2.硬盒/翻盖式 20支A级香烟
3.i thought i could top-up to the full fare after i got on the （bus/train）,because i was rushing