在经过特别训练并具有丰富经验的外科医生的操作下，胃镜检查和活组织检查都是安全的。
Gastroscopy and biopsy are generally safe when performed by surgeons who have had special training and are experienced in these endoscopic procedures.
在经过特别训练并具有丰富经验的外科医师的操作下，结肠镜检查和活组织检查都是安全的。
Colonoscopy and biopsy are safe when performed by surgeons who have had special training and are experienced in these endoscopic procedures.
我们不仅组织大班进行实操，同时也重视各岗位员工的实际操作训练，尤其对司钻、副司钻、井架工和吊机等岗位。
We not only organized captains to proceed operation, but also looked upon the operation training to the post personnel, especially the driller, assistant driller, derrickman and crane driver.
控制和对供应链的责任留在公司，即使操作可能会转移到组织外训练有素。
The control and responsibility toward the supply chain remain with the firm, even though operations may move to a highly trained outside organization.
控制和对供应链的责任留在公司，即使操作可能会转移到组织外训练有素。
The control and responsibility toward the supply chain remain with the firm, even though operations may move to a highly trained outside organization.
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