turtle's egg (highly offensive when directed at sb)
Never forget national humiliation, refers to Mukden railway incident of 18th September 1931 九一八事变 and subsequent Japanese annexation of Manchuria
lit. catch fish then forget the trap (idiom, from Zhuangzi 庄子[zhuāng zǐ]); fig. to take help for granted
to stray and forget to return
1.to forget loyalty when in love2.hoes before bros
发行备忘录發行備忘錄 1.offering memorandum (for public stock issue)2.publication memorandum
谅解备忘录諒解備忘錄 memorandum of understanding
吃水不忘掘井人 Drinking the water of a well, one should never forget who dug it. (idiom)
好了伤疤忘了疼好了傷疤忘了疼 to forget past pains once the wound has healed (idiom)
苟富贵，勿相忘苟富貴，勿相忘, don't forget your friends when you become rich
前事不忘，后事之师前事不忘，後事之師, don't forget past events, they can guide you in future (idiom); benefit from past experience
吃水不忘挖井人 see 吃水不忘掘井人[chī shuǐ bù wàng jué jǐng rén]
好了疮疤忘了痛好了瘡疤忘了痛 see 好了伤疤忘了疼[hǎo le shāng bā wàng le téng]