act as one sees fit
... a stomping fit 跳脚; 跳脚 act as one sees fit 便宜行事 animal fitness 动物健康 ...
act at one's discretion
... act at one's discretion 便宜行事 at one's discretion 任从; 任从 discrete interpolation 离散插补; 离散内插 ...
justice and expediency
便宜行事,汉语成语,拼音是biàn yí xíng shì,意思是自行决定适当的措施或办法。出自《史记·萧相国世家》。