to operate smoothly and efficiently
顺利高效地运作 (shunli gaoxiao di yunzuo)
"The production line runs like clockwork these days."
"生产线 像时钟一样运作 这些天。" (shengchanxian **xiang shizhong yiyang yunzuo** zhexie tian)
to help someone with something
unfortunate or unlucky situation
to avoid laughing in a funny situation
despite great difficulties or challenges
extremely sad about something or someone
to ask for forgiveness and hope for kindness
