While English can be difficult to learn, it is a very useful tool for communication.
尽管英语学起来可能有点难，但它是非常有用的交际工具。
English can be difficult to learn, it is a very useful tool for communication.
尽管英语难学，但它对于交流很有用。
Communication can also be very difficult and challenging, and even sometimes very uncomfortable.
但有的时候，沟通也可能很困难，甚至另人难受。
However, culture is the most difficult communication and can not be equal.
但是文化却是最难沟通和不可平等的。
However, culture is the most difficult communication and can not be equal.
但是文化却是最难沟通和不可平等的。
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