Topsy had an uncommon verbal memory, and committed with a fluency that greatly encouraged her instructress.

托普西对文字的记忆力非常强，上课时对答如流，使她的教十分鼓舞。

He had an encyclopedic command of the field of knowledge, and by a word or a phase, by delicate rapier thrust, he punctured them.

他所掌握的知识就像百科全书那样丰富。用一字或一句话，用几句灵敏机智的对答，他就洞穿了对方的。