掺沙子 摻沙子
chān shā zi
释义
to mix in some sand (e.g. when making concrete); (fig.) to place outsiders into a monolithic group (to infiltrate or disrupt it etc)
chān shā zi
to mix in some sand (e.g. when making concrete); (fig.) to place outsiders into a monolithic group (to infiltrate or disrupt it etc)