Mark kept walking. Suddenly, a tall man in front of him dropped his briefcase and two bottles of purple liquid tumbled out. Mark rushed over to help the man.

• 马克继续走，忽然间，在他前面有一个长得很高的男人的公事包掉在地上，里面的两瓶紫色液体也跟著滚了出来。于是马克匆忙上前去帮他。