optional的近义词/同义词有哪些

adj.可选择的，随意的，任意的，非强制的，选修科目...

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。...

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...

Optional extras include cooking tuition at a top restaurant...可选的额外项目包括在顶级餐厅学习厨艺。The goods are optional, but only one.这些物品是可以任选的, 但只能选一个。Elevation view of a tapered key with optional gib head.具有可选钩头的锥形键的正视图.The third col...

对于很多加利福尼亚的印第安人而言，猫头鹰是圣物。The owl is sacred for many Californian Indian people.路德曾抨击腓特烈保存在维藤贝格的圣物.Luther had already criticized the relics which Frederick kept at Wittenberg.神鹰 、 橡树和橄榄是他们的神圣物.To both the eagle, the oak, an...

speech的近义词有：address, speech, lecture, oration, report, talk,laguage, speech, tongue, dialect, idiom, slang。下面这些名词均含"演讲，讲话，报告"的含义：address ：正式用词，指在庄严隆重的场合作精心准备的演讲或正式演说。speech ：普通用词，指一般的发言或讲话，可以是事先准备的，也可以是即席的。lecture ：侧重带学术...

refurbish的一般过去时为：refurbished...

distils的音标：...

v.（用手）搜（某人）的身( frisk的现在分词 )，（动物）活蹦乱跳...

“低铜血”的英语可以翻译为：[医] hypocupremia ...

colorful的音标：colorful的英式发音音标为：['kʌləfəl]colorful的美式发音音标为：['kʌləfəl]...

NFL的音标：NFL的英式发音音标为：[ˌen ef 'el]NFL的美式发音音标为：[ˌenef'el]...

“太师椅”的拼音为：tài shī yǐ...

v.剥皮（ strip的过去式和过去分词 ），脱光衣服，（齿轮的齿等）折断，表演脱衣舞...

n.仙人掌( cereus的名词复数 )...

A methane molecule is composed of one carbon atom attached to four hydrogens.甲烷分子由1个碳原子与4个氢原子构成。Those that are aligned in the place are called equatorial hydrogens.那些在平面上定向的氢叫做平伏氢.Those that are aligned perpendicular to ...

tracksuits的音标：...

goldbrick的复数形式为：goldbricks...