1.
I'm speaking only from memory.
我只是在凭记忆讲。
2.
He repeated that speech, word for word from memory.
他凭着记忆一字不变地复述那个演讲。
3.
She said the whole poem from memory.
她凭记忆说出了整首诗。
4.
He repeated the lines of the play without book.
他凭记忆复述了台词。
5.
She drew the scene from memory
她凭记忆绘出那个景色。
6.
I recited the poem from memory.
我凭记忆背诵此诗。
7.
He recited the poem from memory.
他凭记忆背诵那首诗。
8.
He played the tune from memory.
他凭记忆弹奏这支曲子。
9.
by ear:by sound,without ever reading printed music of the pieces played
不看乐谱凭听觉记忆
10.
identify(sb/sth)by using one's memory or past experience
凭记忆或经验辨认（某人[某事物]）
11.
Impressionistic memories of early childhood.
早期童年仅凭印象的记忆
12.
He ran off the figures from memory.
他凭记忆流利地说出了那些数字。
13.
She plays the piano entirely by ear.
他演奏钢琴完全凭听觉记忆,不用乐谱。
14.
It does not do to trust to memory for these things.
对这些事光凭记忆是不行的。
15.
do, say, know, learn, etc sth by rote
机械地做某事、 脱口而出、 凭记忆、 死记硬背.
16.
prompting -- for they talked @by the book,@ from memory.
他是在提示哈帕，因为他们全凭记忆，在背这些话。
17.
She can play the most difficult piano music by ear.
她能不看乐谱，光凭听觉记忆弹奏最难的钢琴曲。
18.
What do you make of the On-line vs. Memory-Based debate?
你如何看待凭记忆辩论相对于线上辨论？