optional的反义词有：compulsory, required, compulsory。adj.optional的反义词（随意的;选修的）：compulsory。optional的反义词（其他释义）：required, compulsory。...

option的现在完成时为：optioned...

得到或获准进行选择(option的过去式，过去分词)，调动球员...

It is thought that a management buyout is one option.管理层收购被认为是一种选择。The menu changes weekly and usually includes a vegan option.菜单每周都有变化，通常包含可供严格的素食者选择的菜肴。Co-operation was more than just an attractive option, it was an ob...

This sensitive book tackles the delicate issue of adoption with care and simplicity...这本敏感的书谨慎、简洁地讨论了收养这一微妙问题。Adoption can fail for all kinds of reasons...收养不成功可能有各种原因。It makes nonsense of our own rules governing laws of...

n.选择（的自由），选项，选择权，选择能力vt.得到或获准进行选择，调动球员...

These are just a few of the many options available.这些只不过是众多可能的选择中的几个。Keep your options open and everything will fall into place.给自己留出选择的余地，一切将会水到渠成。Several options are offered for the student's senior year.为毕业班学生开设了...

optioned的音标：...

Additional mineral properties ( gold , silver and uranium ) were optioned in 2005 in Colorado.2005年对科罗拉多洲的另外一些矿产地 ( 、 和铀 ) 具有期权....

option的音标：option的英式发音音标为：['ɒpʃn]option的美式发音音标为：['ɑpʃn]...

n.采用，收养( adoption的名词复数 )...

option的现在进行时为：optioning...

option的第三人称单数（三单）为：options...

n.采用，收养...

option的近义词/同义词有：volitional, unbidden, spontaneous, unprompted, voluntary, independent, discretionary, free, unforced, unsolicited, substitute, equivalent, choice, surrogate, alternative, pleasure, prepossession, partiali...

optional的近义词/同义词有：voluntary, elective, voluntary, elective。adj.optional的近义词（自愿的,志愿的）：voluntary, elective。optional的近义词（其他释义）：voluntary, elective。...

optional的音标：optional的英式发音音标为：['ɒpʃənl]optional的美式发音音标为：['ɑpʃənl]...

We also recommend a full day optional excursion to the Upper Douro.我们还推荐去杜罗河上游的短途自选一日游。The course consists of ten core modules and five optional modules.这门课程包括十个必修单元和五个选修单元。Certain courses are compulsory, others are opti...

option的近义词有：choice, alternative, preference, option, selection, election。下面这些名词均含有"选择"的含义：choice：侧重指自由选择的权利或特权。alternative：指在相互排斥的两者之间作严格的选择，也可指在两者以上中进行选择。 preference：侧重因偏见、爱好或判断等而进行选择。option：着重特别给予的选择权利或权力，所选物常常相互排斥。sel...

n.选择(option的名词复数 )，选项，选择权，选择能力，[经济]买卖的特权...

option的一般过去时为：optioned...

Several options are offered for the student's senior year.为毕业班学生开设了几门选修课。The biggest clearinghouse is the Options Clearing Corporation in the United States.最大的票据交换所是联邦期权票据交换公司.It means that all the options are at le...

得到或获准进行选择(option的现在分词形式)，调动球员...

adoption的音标：adoption的英式发音音标为：[ə'dɒpʃn]adoption的美式发音音标为：[ə'dɑpʃn]...

adj.可选择的，随意的，任意的，非强制的，选修科目...

options的音标：options的英式发音音标为：['ɒpʃnz]options的美式发音音标为：['ɒpʃnz]...

optioning的音标：...

D . When specified , gaskets of other materials are available as an option.作为备选件, 如果用户要求, 也可提供其它材料的垫圈.Daphne was so guileless that Claire had no option but to believe her.达夫妮如此忠厚老实，克莱尔对她的话也只有信以为真了。The regime at Latchmere...

adoption的复数形式为：adoptions...

option的复数形式为：options...