re.fresh.er

refresher的音标和读音：
DJ音标发音： [riˈfreʃə]
KK音标发音： [rɪˈfrɛʃɚ]

refresher的词性：
n.（名词）

1. One that refreshes:
清凉物：

a lemon refresher, imbibed on a hot day.
在热天喝的柠檬清凉饮料

2. Instruction that serves to reacquaint one with material previously studied or to bring one's knowledge or skills up to date.
进修：使人熟悉以前学过的知识或使人的知识跟上时代节奏的教学