底特律雄狮队加强了防守，签下了一名防守后卫并重新签下了线卫权·亚历山大。 Detroit Lions bolster defense, signing a defensive back and re-signing linebacker Kwon Alexander.

底特律狮子队已经签下了一名防守后卫, 并重新签下了后卫Kwon Alexander. The Detroit Lions have signed a defensive back to their active roster and have re-signed linebacker Kwon Alexander. 这些行动的目的是随着季节的到来,加强团队的防御能力。 These moves aim to strengthen the team's defense as the season progresses.