All the technical staff are trained up to a high level of efficiency.

受过训练的所有技术人员均具有高水平的工作效率。

youdao

All the technical staff are trained up to a high level of efficiency.

所有的技术人员均经受训练而具有高水平的工作效率。

youdao

All the technical staff are trained up to a high level of efficiency.

所有的技术人员均经受训练而具有高水平的工作效率。

youdao