"they avoided all recreational activity"
"his sphere of activity"
"he is out of action"
"respiratory activity"
"catalytic activity"
"the action of natural forces"
"volcanic activity"
"the level of activity declines with age"
来自柯林斯例句
来自柯林斯例句
来自柯林斯例句
来自柯林斯例句
来自柯林斯例句