HSK 1.0 (1992)	Big5	Gb	Pin	Eng
B	保持	保持	bao3chi2	keep/ maintain/ preserve
B	保存	保存	bao3cun2	preserve/ keep/ conserve
B	保留	保留	bao3liu2	reserve/ hold back
B	預備	预备	yu4bei4	get ready/ prepare/ reserve
C	維持	维持	wei2chi2	maintain-preserve/ keep/ support/ safeguard
D	備用	备用	bei4yong4	reserve/ alternate
D	禁區	禁区	jin4qu1	forbidden zone preserve

HSK 2.0 (2010)	Big5	Gb	Pin	Eng
4		留	liu2	to leave (eg a message)/ to retain/ to stay/ to remain/ to keep/ to preserve
5		保持	bao3 chi2	to keep/ to maintain/ to hold/ to preserve
5		保存	bao3 cun2	to conserve/ to preserve/ to keep/ to save (a file etc) (computing)
5		保留	bao3 liu2	to retain/ to continue to have/ to preserve/ to maintain/ to reserve/ reservations/ to hold back (approval or acceptance)
6		储备	chu3 bei4	reserves/ to store up
6		蕴藏	yun4 cang2	to hold in store/ to contain (untapped reserves etc)
6		维持	wei2 chi2	to keep/ to maintain/ to preserve

HSK 3.0 (2022)	Big5	Gb	Pin	Eng
2	留	留	liú	continue, stay, keep, leave behind, leave, grow, accept, (let) grow, leave (sth.), let grow, ask ... to stay, take, bide, wear, study in a foreign country, save, reserve, reservation, ask sb. to stay, remain
3	保持	保持	bǎochí	keep, maintain, preserve
3	保存	保存	bǎocún	preserve, conserve, keep
3	保	保	bǎo	keep, maintenance, preserve soil moisture, stand guarantor, defend, protection, ensure, stand guarantor for sb., preserve, preservation, warrant, bail, defence, protect, maintain, seek, guarantee
3	保留	保留	bǎoliú	continue to have, retain, hold back, reserve
3	存	存	cún	harbour, keep, deposit (money), gather, harbor, cherish, accumulate, existence, live, leave with, retain, reserve, save, consist, accumulation, preserve, survival, store, survive, check (luggage), collect, deposit, place, bank, check, exist, be in stock, remain on balance
3	現金	现金	xiànjīn	quids, rhino, clink, ready, cash reserve in bank, dough, dust, ducat, kale, cash, blunt, till, ready money
4	維持	维持	wéichí	keep, preserve
6	隱藏	隐藏	yǐncáng	cache, hold back, hidden, blot_out, suppress, disguise, concealment, remain under cover, lurk, secrete, reserve, recess, hoodwink, dissemble, stash, veil, hold in, bury, hide, conceal, occult, mask, ensconce, cover_up, palliate, obscure, hoard
7	備用	备用	bèiyòng	reserve, spare, alternate, backup
7	儲備	储备	chǔbèi	reserves, to store up
7	公積金	公积金	gōngjījīn	official reserves, accumulated fund
7	含蓄	含蓄	hánxù	to contain, to hold, (of a person or style etc) reserved, restrained, (of words, writings) full of hidden meaning, implicit, veiled (criticism)
7	後備	后备	hòubèi	reserve, backup
7	領域	领域	lǐngyù	demesne, line of business, field of operation, country, background, terrain, realm, part, arena, sphere of influence, setting, territory, precinct, radius, scope, domain, sphere, frontier, orbit, preserve, area, world, kingdom, ambit, signory, province, region, field, universe, hemisphere
7	內向	内向	nèixiàng	reserved (personality), introverted, (economics etc) domestic-oriented
7	預定	预定	yùdìng	predetermination, predetermine, forespeak, preordain, engage, budget, reserve, phase, slate, fix in advance, predestine, state, preconcert, prearrange, take, schedule, destine, bespeak, foreordain, predestinate
7	蘊藏	蕴藏	yùncáng	to hold in store, to contain (untapped reserves etc)

肉没保存好，已经臭了。 The meat hasn't been properly preserved and already stinks . 肉 没 保存 好 , 已经 臭 了 。 (ENG ) (ZH ) (2767)

Let's reserve that for another occasion .	我们留到下次再说吧。
Please reserve this table for us .	请为我们预订这张桌子。
Don't be so reserved .	别这么矜持。
You always reserve the same room .	您总是预订同一个房间。
I'd like to reserve a table for three .	我想预订一张三人桌。
I'd like to reserve a seat .	我想预订一个座位。
She reserved a room .	她预订了一个房间。

我们留到下次再说吧。

请为我们预订这张桌子。

别这么矜持。

您总是预订同一个房间。

我想预订一张三人桌。

我想预订一个座位。

她预订了一个房间。