常見例句雙語例句Establishment of the system about evaluating the ecotourism hierarchy is the key to the ecotourism certification.生態(tài)旅游認(rèn)證的關(guān)鍵是建立生態(tài)旅游等級評價體系。The certification chain defines the hierarchy of approving Certification Authorities, and provides a list of CA certificates required to approve a given personal certificate.證明鏈定義了批準(zhǔn)認(rèn)證中心的層次，并且提供了批準(zhǔn)一張給定的個人證書所需的 CA 證書列表。 返回 certification hierarchy