很困难

• in troubled water

例句

1. 要用科学的字眼来表达它是很困难的。
   It is difficult to express it in terms of science.
2. 在一个短语中，决定哪个词是主要词或重要词，有时是很困难的。
   It is difficult at times to determine which is the principal or important term in a phrase.
3. 那个商店在一条单行道的街上，这使停车很困难。
   The shop is in a one-way street, which makes it very difficult for parking.