Translate the following sentences into English.
不少科学家已经意识到威胁生存环境的事实，多次向全国人民发出了警告。(sound)
MANY SCIENTISTS HAVE REALIZED THE FACTS CONCERNING THE DANGERS TO THE LIVING ENVIRONMENT AND HAVE REPEATEDLY SOUNDED A WARNING TO THE WHOLE NATION.
Translate the following sentences into English.
不少科学家已经意识到威胁生存环境的事实，多次向全国人民发出了警告。(sound)
Translate the following sentences into English.
不少科学家已经意识到威胁生存环境的事实，多次向全国人民发出了警告。(sound)
MANY SCIENTISTS HAVE REALIZED THE FACTS CONCERNING THE DANGERS TO THE LIVING ENVIRONMENT AND HAVE REPEATEDLY SOUNDED A WARNING TO THE WHOLE NATION.
