Conclusion Intra-articular injection of sodium hyaluronate can significantly reduce the local symptoms of knee joint, and increase joint activity and restore knee joint function.

结论玻璃酸钠关节内注射可明显减轻膝关节的局部症状，增加关节的活动度，恢复膝关节的功能。

youdao

Walking is something you can do with others, in the sense that it can be a joint activity,a joint undertaking.

走路是一件你能和他人一起做的事，这是一个共同合作的行为和事件。

耶鲁公开课 - 死亡课程节选

Living is at nearly every level a joint activity and there is minimal queue-jumping.

FORBES: Learn From Disney And Let Single Riders Have Their Day

The exact scope of the project is yet to be defined, but the concrete joint activity will already facilitate the introduction of internationalized domain names at the top level, helping UNESCO Member States to prepare their IDN ccTLD applications.

UNESCO: MEDIA SERVICES

We continue to have joint activity in Afghanistan, and the Turkish armed forces have taken over the command of the forces there for a third time with the additional support that we have sent to Afghanistan in the last couple of months.

WHITEHOUSE: President Obama Meets with Turkish Prime Minister Erdogan