roller joint的用法和樣例:
例句
- The toe of the raised hind leg should reach just above the fetlock joint of the other hind leg.
后蹄尖抬起的高度應剛好達到另一側後肢球節的上方。
- Viewed from the side, pasterns are slightly slanted, with the pastern joint strong, but flexible.
從側面看,球節略微傾斜,堅固,但是是靈活的。
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