英文: That's undoubtedly wrong.
中文: 那的确是错了。英文: Telephone-based insurance was undoubtedly more efficient.
中文: 在线保险毫无疑问(显得)更有效。英文: Undoubtedly, the point you make is valid.
中文: 毫无疑问,你提的论点是站得住脚的。英文: Undoubtedly, animals can not live without water.
中文: 不用说,动物没有水是无法生存的。英文: Undoubtedly, landlord terror set the movement back.
中文: 地主采取的恐怖手段,确实一度干扰了土改运动。