.本题句意为:科学本身无害的，但一旦它能提供技术，就并非是无害的。Harmful意为“有害的”，应该为harmless“无害的”才符合题意。
Part Ⅵ Translation
77. more than I can describe in words/beyond words
78. singing and dancing to their hearts content.
79. as if she knew me
80. so that it could be conducted smoothly
81. he be offended/annoyed
责任编辑:yechenglu
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