standby做好准备等待,待机帮助,援助备用设备待时详细»
代用品ersatz;substitute;surrogate详细»
代用品substitute;ersatz;substitution goods详细»
代用品substitute;succedaneum;surrogate详细»
代用品substitute;substitute goods详细»
代用品substitute;ersatz;substitution goods详细»
代用品quid pro quo;substituent;substitute products;substitution goods;surrogate详细»