Cash-cow
搖錢樹；巨大財源
?? 詞語組成解析
cash
[k??]
n. 現金;支付金額;
vt. 支付現款;兌現;
adj. 現金的;
cow
[ka?]
n. 奶牛，乳牛;母獸;雌（象，鯨等）;<侮辱>對女性的蔑稱;
vt. 恐嚇;嚇唬;威脅;
??? 情景例句
First, we need to more public relations activities to promote understanding.
首先，我們應該更多地做公關活動以促進了解。
Pardoning the bad is injuring the good.
饒了壞人便傷了好人。
They disregard social conventions without being conscious that they are doing anything extraordinary.
他們不顧社會習俗，意識不到自己所作所為有什么特殊之處。