huó dòng
坐久了应该站起来活动活动
zuò jiǔ le yīnggāi zhàn qǐlái huódong huódong
After sitting for a long time, you should stand up and move around
出去散散步，活动一下筋骨。
Chūqù sànsànbù, huódòng yīxià jīngǔ.
Go out for a walk and stretch your muscles and bones.
抗战时这一带常有游击队活动。
Kàngzhàn shí zhè yīdài cháng yǒu yóujīduì huódòng.
During the War of Resistance, guerrilla forces were often active in this area.