很困難的用法和樣例：
例句
-
要用科學(xué)的字眼來(lái)表達它是很困難的。
It is difficult to express it in terms of science. -
在一個(gè)短語(yǔ)中，決定哪個(gè)詞是主要詞或重要詞，有時(shí)是很困難的。
It is difficult at times to determine which is the principal or important term in a phrase. -
那個(gè)商店在一條單行道的街上，這使停車(chē)很困難。
The shop is in a one-way street, which makes it very difficult for parking.
