这些参与者弯曲着左膝躺在桌子上，左踝被绑在踏板上。

While the participants lay on a table with their left knee bent, their left ankle was strapped into a footplate.

youdao

这些参与者弯曲着左膝躺在桌子上，左踝被绑在踏板上。

While the participants lay on a table with their left knee bent, their left ankle was strapped into a footplate.

youdao