The people pitching up at its borders surely count as proof of that.

不断有难民涌向美国边境无疑已经证明了这一点。

And it's about pitching it up, as you said, and pitching it out. - Right.

就像你说的，这是关于把情绪提起来，然后再抛出去。- 对。

Bringing the pitch up, friendly tone.

提高音调，友好的语气。

Wait a bit longer – Bill hasn’t pitched up yet.

【pitch】再等一会儿——比尔还没有站起来。

Moving the legs forward is worse and causes the body to pitch nose up.

向前移动双腿会更糟糕，并导致身体向上倾斜。

And then as it brings its legs all the way forward, it's able to pitch up and land on a tree.

然后当它把腿一直向前推进时，它就能向上倾斜并落在树上。

When the elevators go down, the nose of the plane pitches down, and when the elevators go up, the nose of the plane pitches up.

当升降舵下降时，飞机的机头向下倾斜，当升降舵上升时，飞机的机头向上倾斜。