就是
jiù​shì HSK3

precisely is

就是 jiù​shì
precisely is adverb
emphatic form of the copula verb 是 shì, used to stress identity or existence.
simply is adverb
used to express that something is exactly the case, or to emphasize identity.
exactly adverb
exactly; precisely

这个人就是我要找的那位医生。

zhèi gè rén jiù shì wǒ yào zhǎo de nà wèi yī​shēng.

This person is exactly the doctor I'm looking for.

simply adverb
only; simply; just

我就是想帮你，没有别的意思。

wǒ jiù​shì xiǎng bāng nǐ, méi​yǒu bié​de yì​si.

I just want to help you; I don't have any other motives.

is simply/is exactly noun
used to equate the subject with the complement, emphasizing that the former is exactly the latter; meaning 'is just' or 'is exactly'.
just/simply adverb
an adverbial phrase used to emphasize a state, feeling, or the inevitability of a situation, often expressing frustration or insistence.
even if adverb
even; even if (often used correlatively with 也 yě)

就是再困难，我们也要坚持下去。

jiù​shì zài kùn​nan, wǒ​men yě yào jiān​chí xià​qù.

Even if it gets even more difficult, we must persevere.

merely/simply adverb
an emphatic expression used to indicate that the following action is the only purpose or reason, equivalent to 'just' or 'simply'.

Frequency
Movie subtitles
838.8 per million appears in 94% of films
Written text
1121.1 per million

Details
HSK 3.0
Level 3

Sources
Definitions
CC-CEDICTAI-generated definitions
Frequency data
SUBTLEX-CHBCC Corpus (BLCU)