It was quite difficult and dangerous work.
这是一件既难又危险的活儿。
Sailors have a difficult and dangerous life .
水手过着艰苦而且危险的生活。
It's still a difficult and dangerous situation.
现在的情况仍然非常困难和危险。
It was an extremely difficult and dangerous task.
这是一项极度困难危险的任务。
It will be a difficult and dangerous place to live.
那是一个艰苦和危险的居住地。
I started to teach Queen another trick, a difficult and dangerous trick.
我开始教皇后另外的一个诡计，一个困难的和危险的诡计。
So, living in that Tiger Mouth must have been very difficult and dangerous.
那他们住在虎口里了，真是既艰苦又危险。
Life becomes increasingly difficult and dangerous for these faithful friends.
牠们的生活变得愈来愈艰难和危险。
But they also caution that it is a difficult and potentially dangerous process.
不过专家同时警告，这个过程会是困难的，而且可能有潜在危险。
I can also learn about the animal survival difficult and not dangerous.
我还可以从中了解到动物生存的艰难和未向危险。
I can also learn about the animal survival difficult and not dangerous.
我还可以从中了解到动物生存的艰难和未向危险。
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