单词	double echo
释义	double echo 双回波
随便看	program item icon program-item number program item properties program items program key program label program language program language type program language types program launcher gui program layer program learning program lending program length program-length program-length commercial program-level program level program level change tape program level diagram program-levels program librarian program libraries program library program library file 人间又见真乘黄人间唤作凉风人间四月芳菲尽人间四月芳菲尽人间天上人间天上两悠人间好处人间如梦人间客人间平地亦崎岖洋纸洋线洋绉洋绣球洋罪洋脚碾洋腔洋舱洋节洋芋