庆幸的是大量可靠的证据证明抽烟和癌症有直接联系是毫无疑问的
The good news is that a wealth of solid evidence proves the direct link between smoking and cancer beyond any doubt
以上为机器翻译结果，长、整句建议使用 人工翻译 。
庆幸的是，大量可靠的证据证明抽烟和癌症有直接联系是毫无疑问的。
Fortunately, mountains of reliable evidence proves the direct link between smoking and cancer beyond any shadow of the doubt.
庆幸的是，大量可靠的证据证明抽烟和癌症有直接联系是毫无疑问的。
Fortunately, mountains of reliable evidence prove the direct link between smoking and cancer beyond any shadow of the doubt.
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