• Most forms of the common cold and flu are caused by viruses.

    大部分普通感冒流感都是病毒引起的。

    youdao

  • The common cold and the flu are both caused by viruses.

    普通感冒流感病毒引起的。

    youdao

  • The common cold and the flu are both caused by viruses.

    普通感冒流感病毒引起的。

    youdao

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