Check the camera path in one of the viewports, if there is a spike in the path then there are probably loose trackers on that frame, or not enough trackers.

在某一视图内检查摄像机路线，如果摄像机路径上有尖状，那么那一帧很可能有一些不牢固的跟踪器，或跟踪器不够。

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Before beginning a discussion on the design of diaphragms, let us first look at the load path for lateral forces in a simple low-rise wood-frame building.

在开始讨论设计横隔之前，让我们先看看一个简单的低层木结构的侧向荷载的传递路径。

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Create a dummy, and add a Path Constraint to make it follow the same spline, but now (with Auto Key on) go to frame 0 and type in 10% in the % Along Path field.

创建一个虚拟体，添加一个路径约束，让它跟着同一条曲线运动，但是现在(保持自动关键帧打开)回到第0帧，将百分比调到10%。

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Once that path or frame is set, it cannot be changed until the conversation is over.

FORBES: Why the Cloud Needs a Network Decongestant

When one computer wants to talk to another that is not on the same switch, it must find a path to that computer called a frame.

FORBES: Why the Cloud Needs a Network Decongestant

Having endured endless jokes about his oversized frame, the New Jersey governor shrewdly decided the best path was to poke fun at himself.

CNN: Enough with stories about who's fat