Sometimes the cannon is fixed in position, and other times you have to use the force of firing it to push it into a spot where you can hit the ball.

有时大炮是固定的位置，其他时候你必须使用发射它的力量把它推到一个你可以击中球的点。

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The hair shaft and inner root sheath move together as the hair grows toward the surface: the outer root sheath remains fixed in position.

毛干和内根鞘当到达体表时融合在一起：外根鞘仍然保持在原来的位置。

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The third and smallest change is that the sliding doors on the back of the lower legs are now fixed in position and no longer move (I'm not sure why).

第三，也是最小的一个变化是。下腿处的滑门，被改为固定的，不可以像以前一样活动。

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Land, which is a necessity of human existence, which is the original source of all wealth, which is strictly limited in extent, which is fixed in geographical position land, I say, differs from all other forms of property in these primary and fundamental conditions.

FORBES: The Case For Monetary Freedom

However, the prolonged immobility of joints associated with wheelchair use can worsen contractures, in which the limbs draw inward and become fixed in that position.

CNN: Muscular dystrophy

The Fan Choice camera is a fixed position camera in the best position to hunt for compelling views of the game action.

ENGADGET: CBS Super Bowl 'second screen' stream to include alternate cameras, DVR functionality