exist的一般过去时怎么写？

exist的近义词/同义词有：be, live, subsist, occur, stand, prevail, prevail, occur, live, be, stand。vi.exist的近义词（存在;生存）：be, live, subsist。exist的近义词（存在;站立）：occur, stand, prevail。exist的近义词（其他释义）：prevail, occur, live, be, stand。...

exist的现在完成时为：existed...

exist的第三人称单数（三单）为：exists...

I would have to learn, little by little, to exist alone.我得慢慢学会独自生活。For all practical purposes the treaty has already ceased to exist.实际上协议已经不复存在。He thought that if he couldn't see something, it didn't exist.他认为...

exist的现在进行时为：existing...

vi.存在，生存，生活，继续存在...

exist的音标：exist的英式发音音标为：[ɪg'zɪst]exist的美式发音音标为：[ɪɡ'zɪst]...

exist的近义词有：exist, be, live。下面这些动词都有"存在"的含义：exist：通常指可观察到的或众所周知的存在现象。be：指某时某地确存在的事物或现象，多与there连用。live：多指有生命的东西的存在。指无生命事物时，强调可联想起生命的那些特点。...

Invertase can exist as active monomer ( light invertase ) or as an aggregated active form ( heavy invertase ).转化酶可以活性单体 ( 轻转化酶 ) 或聚集的活性形式 ( 重转化酶 ) 存在.There exist complete cross - incompatibility and also partial incompat...

grimace的音标：grimace的英式发音音标为：[grɪ'meɪs]grimace的美式发音音标为：['ɡrɪmɪs, ɡrɪ'mes]...

“洁白”的近义词/同义词：明净, 纯洁, 纯净, 清白, 雪白, 皎皎, 皎洁, 皎白, 洁净。...

n.通奸，私通，通奸行为...

“天真”的英语可以翻译为：innocent，artless，naive，puerility，simplicity ...

n.异形细胞...

I had one hell of a hangover the next morning.第二天早上宿醉让我难受死了。‘Why are you drinking whisky at 8 o’clock in the morning?’ ‘Hair of the dog.I’ve got the most terrible hangover.’ “你干吗早上8点喝威士忌?”“解宿醉,从来没有酒后这么难受过。”He had a hango...

a leading supplier of computers in the UK英国一家主要电脑供应商They struck a deal with their paper supplier, getting two years of newsprint on credit.他们同纸张供应商达成协议，可赊购两年的新闻用纸。By changing its supplier, the company saved thousands of ...

logomachies的音标：...

selling的音标：selling的英式发音音标为：['selɪŋ]selling的美式发音音标为：['selɪŋ]...

clot的音标：clot的英式发音音标为：[klɒt]clot的美式发音音标为：[klɑt]...

forbid的近义词有：forbid, prohibit, ban。下面这些动词均有"禁止"的含义：forbid：通俗用语，指直接地、面对面吩咐不许他人采取某种行动。 prohibit：正式用词，多指通过法律手段或制订规则加以禁止。ban：语气最强，指权威机关明文取消或禁止严重危害公众利益的事或行为，隐含道义上的谴责意味。...

vt.耗尽，用尽，使枯竭，[医]减液，放血vi.耗尽，减少，损耗...

reading room的复数形式为：reading rooms...

n.中心，（市镇的）中心区，中心点，中枢vt.& vi.置于中央，集中，把…当作中心，（使）成为中心...

“生产”的近义词/同义词：临盆, 坐蓐, 分娩, 坐褥, 出产, 临蓐。...