surrogate

1. ADJ You use surrogate to describe a person or thing that is given a particular role because the person or thing that should have the role is not available. 替代的[ADJ n]

Martin had become Howard Cosell's surrogate son. 马丁已成为霍华德马考塞尔的代子了。

2. N-COUNT Surrogate is also a noun. 替代者; 替代物

Arms control should not be made into a surrogate for peace. 军备控制不应变成和平的替代物。