口語課堂第105期:揭發人;袖手旁觀
whistle-blower 揭發違規的人
According to whistle-blower,the company has been trapped in a serious financial problem for a long time.
據揭發，這個公司已經陷入財務危機很長時間了
to sit on one's hands 袖手旁觀
He is really cold-blooded.A girl cried for help before him,but he just sat on his hands.
他真是個冷血的人。一個女孩在他面前哭喊着請求幫助，他卻無動於衷。
They want to help raise money to fight can't sit on their hands.
他們想爲抵制艾滋籌集點錢，他們沒辦法袖手旁觀。
