Correct

献余热

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Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/献余热-Chinese-idioms-Cchatty-af93b02b-bcce-4625-b44b-a33aa9303c6b-1612777731.jpg

Collocation

1
表示愿意献余热
2
还在献余热
3
积极献余热

Definition

献余热

Literally means:

contributing one's afterheat

Actually means:

Figuratively it means old people do what they can during their retirement to contribute to the country, the society, the unit or the family.

It usually implies appreciation and admiration. Commendatory.

贡献自己剩余的热量,比喻老年人抓紧晚年的时间向国家、社会、单位或家庭多做贡献。

多含有赞赏和钦佩的意味。具有褒义色彩。

Example

Used as predicate or object. (作谓语、宾语)
1
Suīrán
虽然
tuìxiū
退休
le
  
,
lǎo
老伯
hái
积极
xiàn
余热
  
,
cānjiā
参加
le
duō
xiàng
shèhuì
社会
gōng
公益
huódòng
活动
  

Although retired, Li Laobo also actively donated heat, participated in a number of social welfare activities.

2
Běnshì
本市
各级
lǐngdǎo
领导
xiàng
tuìxiū
退休
rényuán
人员
bàinián
拜年
shí
  
,
鼓励
men
他们
继续
wéi
guójiā
国家
de
jiànshè
建设
shì
事业
xiàn
余热
  

When the city's leaders at all levels pay New Year's greetings to retirees, they are encouraged to continue to contribute to the cause of national construction.

3
Zhèxiē
这些
tuìxiū
退休
lǎo
jiàoshòu
教授
shēn
身体
hái
cuò
不错
  
,
hái
néng
xiàn
余热
  
,
shì
zhī
shì
不可忽视
de
liang
力量
  

These retired old professors are in good health and can contribute heat, which is a force to be reckoned with.