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.
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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