ticklish

1. ADJ A ticklish problem, situation, or task is difficult and needs to be dealt with carefully. (问题、情况、任务等)艰难的; 难处理的; 棘手的[usu ADJ n]

So car makers are faced with the ticklish problem of how to project products at new buyers. 因此，汽车制造商面临着怎样向新顾客树立产品形象的难题。

2. ADJ Someone who is ticklish is sensitive to being tickled, and laughs as soon as you tickle them. 怕痒的; 怕胳肢的

This massage method is not recommended for anyone who is very ticklish. 这种按摩法不推荐给很怕痒的人使用。