你能帮我拧松这个罐子盖吗？它卡住了。

Can you help me ___loosen this jar lid? It's stuck.

随着时间的推移，那颗旧螺丝开始松动并脱落。

Over time, the old screw began to ___loosen and fall out.

政府决定放宽严格的规定，以鼓励更多的商业投资。

The government decided to ___loosen the strict regulations to encourage more business investment.