ph.

1. She summoned up her courage and stepped in.
她鼓起勇气走了进去。

1. 振作：summit 顶点 | summon up 振作 | summon 召集

2. 振作,鼓起：stumble across 偶然发现 | summon up 振作,鼓起 | take offence at 因......而生气,见怪

3. 鼓起 ,振作：subscribe to捐款,订阅 | summon up鼓起 ,振作 | take away减去,使离去

1. - see summon 2

2. 唤起;使想起
If something summons up a memory or thought, it causes it to come to your mind.

e.g. The oddest events will summon up memories.
那些非常稀奇古怪的事情会唤起人们的记忆。