turn around

noun

1. turning in an opposite direction or position

e.g. the reversal of the image in the lens

Synonym: reversal

verb

1. improve significantly
go from bad to good

e.g. Her performance in school picked up

Synonym: pick up

2. improve dramatically

e.g. The new strategy turned around sales
The tutor turned around my son's performance in math

3. turn abruptly and face the other way, either physically or metaphorically

e.g. He turned around to face his opponent
My conscience told me to turn around before I made a mistake

Synonym: swing aroundswing about

1. 轉：收到有关 Read_Command 之后,系统会进入时间较长的逆转 (Turn Around) 阶段,让从属芯片的 MD 线路驱动器有足够时间通电. 此时,从属芯片可以中断 MD 接收器与 MD 线路的联系,或干脆中断其电源供应. 目前的数据传输率一般都不超过 160 Mbps,

2. turn around

2. (生意)好转,转变：business slide 买卖/企业滑坡,下滑 | turn around (生意)好转,转变 | subconscious 下意识的,潜意识的