Usage note
长久表示很长时间。
cháng jiǔ biǎo shì hěn cháng shí jiān。
长久 means for a long time.
Context note
长久常用于关系、效果和影响。
cháng jiǔ cháng yòng yú guān xì 、 xiào guǒ hé yǐng xiǎng。
It is often used for relationships, effects, and impact.
5 examples
长久的友谊很珍贵。
cháng jiǔ de yǒu yì hěn zhēn guì。
Long-lasting friendship is precious.
这样下去不是长久之计。
zhè yàng xià qù bú shì cháng jiǔ zhī jì。
This is not a long-term solution.
他长久地住在这里。
tā cháng jiǔ dì zhù zài zhè lǐ。
He lived here for a long time.
长久保持很难。
cháng jiǔ bǎo chí hěn nán。
It is hard to maintain for a long time.
希望问题能够长久解决。
xī wàng wèn tí néng gòu cháng jiǔ jiě jué。
I hope the problem can be solved for a long time.
5 mini stories
他们的友谊非常长久。
tā men de yǒu yì fēi cháng cháng jiǔ。
Their friendship is very long-lasting.
长久的努力终于有了结果。
cháng jiǔ de nǔ lì zhōng yú yǒu liǎo jié guǒ。
Long-term effort finally yielded results.
这种办法不能长久使用。
zhè zhǒng bàn fǎ bù néng cháng jiǔ shǐ yòng。
This method cannot be used for a long time.
她希望健康能长久保持。
tā xī wàng jiàn kāng néng cháng jiǔ bǎo chí。
She hopes health can be maintained for a long time.
长久的陪伴让人安心。
cháng jiǔ de péi bàn ràng rén ān xīn。
Long-term companionship makes people feel at ease.
Mini dialogue
长久友谊
A
希望我们的友谊可以长长久久。
Xīwàng wǒmen de yǒuyì kěyǐ chángchángjiǔjiǔ.
I hope our friendship can be long-lasting.
B
一定会的，我们是长久的好朋友。
Yīdìng huì de, wǒmen shì chángjiǔ de hǎo péngyou.
It definitely will, we are long-lasting good friends.
长久计划
A
学习中文是一个长久的计划。
Xuéxí Zhōngwén shì yī gè chángjiǔ de jìhuà.
Learning Chinese is a long-lasting plan.
B
是的，需要长久地坚持。
Shì de, xūyào chángjiǔ de jiānchí.
Yes, it requires long-lasting persistence.
Related words and contrasts
opposite
短暂
duǎn zàn
short, brief
长久 means long-lasting, 短暂 means short-lived. They are opposites.
similar
永久
yǒng jiǔ
permanent, forever
Both describe a long time. 永久 is even stronger, meaning forever.