crackajack
n. 杰出；能干；上等
adj. 杰出的；能干的；上等的（等于 crackerjack）
例句
Who is optimal student and crackajack teacher?
谁是最佳学生和杰出老师？
He made crackajack contribution for the mankind.
他为人类做出了杰出的贡献。
Students whose achieve we are pirates, these data are stolen from youdao s are crackajack get the highest scores on self acceptance;
学习成绩为上等学生的自我接纳程度最高；
