A misaligned spine puts extra stress on your jawjoints.
脊柱姿势不正将额外的压力放到你的颌关节。
2
Its descendants gradually improved the function of their primitive lungs, morphed their lobe fins into legs, and jury-rigged their jawjoints to hear in the air instead of water.
他们的后裔逐渐提升了肺功能，鱼鳍进化为腿，下颌关节突生，以便提高陆地上的听觉。
3
Unlike modern snakes, s. indicus lacked jawjoints that allowed it to open its mouth incredibly wide, so it relied on its large overall body size to prey on the fledgling dinosaurs.