例句：

　　Lawlessness is a major problem.

　　違反法律是一個(gè)嚴重的問(wèn)題。

　　The problem is well documented.

　　這個(gè)問(wèn)題有很多依據。

　　The problem won't just disappear.

　　這個(gè)問(wèn)題不會(huì )就這樣不了了之的。

　　That's a very hard question.

　　那是個(gè)很難的問(wèn)題。

　　He couldn't answer the question.

　　他沒(méi)有能回答那個(gè)問(wèn)題。