没有留下任何痕迹...

Hanging from his right wrist is a heavy gold bracelet.他的右腕上戴着一只沉甸甸的金手镯。A gold bracelet dangled from his left wrist.一只金手镯在他的左手腕上晃来晃去。He picked the bracelet up for me.他帮我把手镯捡了起来。...

Oral contraceptives are readily available.口服避孕药容易得到.Some barrier contraceptives also help to protect against sexually transmitted infections.有些屏障避孕还有助于预防性传播疾病.Continuous Oral Contraceptives: Are Bleeding Patterns Depende...

Araceae的音标：...

勉强做某事...

Her bead necklaces and bracelets jangled as she walked.她的珠子项链和手镯在她走动时叮当作响。Her bracelets were going clack-clack-clack, she was shaking so hard.她的手镯哗啦哗啦直响，她抖得厉害。The lamplight struck a gleam from her bracelets.她的手镯在灯光的照射下闪闪...

disgrace的复数形式为：disgraces...

racetrack的音标：racetrack的英式发音音标为：['reɪstræk]racetrack的美式发音音标为：['resˌtræk]...

The feasibility that the concentration of anthracene can be determined by thermal lens technique.讨论了热透镜技术对紫外光作用下能产生荧光的物质多环芳烃蒽的检测.The derivates of naphthalene, fluorene, pyrene, anthracene, acenaphthene and their applicat...

disgrace的第三人称单数（三单）为：disgraces...

Macrocypracea的音标：...

n.赛跑，竞争，人种，民族v.参加比赛，使比赛，快速移动，剧烈跳动...

n.跑道，赛马场，赛车场...

disgraces的音标：...

n.手镯，手铐...

bracelet的复数形式为：bracelets...

It was a massive, graceless house.这是一间非常难看的大房子。...a graceless pirouette.笨拙的单脚尖旋转She couldn't stand his blunt, graceless manner.她无法忍受他的唐突和粗鲁。a graceless, angry young man粗鲁、愤怒的年轻人...

免疫避孕...

小脑外的...

graceful的音标：graceful的英式发音音标为：['greɪsfl]graceful的美式发音音标为：['ɡresfəl]...

n.赛舟，竞渡...

n.步行竞赛，赛跑...

bracer的音标：bracer的英式发音音标为：['breɪsə(r)]bracer的美式发音音标为：['breɪsər]...

氯乙酰苯...

What should recuperate of home of costal bone retrace notice?肋骨骨折回家疗养应该注意些什么?She turned around and began to retrace her steps towards the house.她转身沿原路向那栋房子走去。You might find your ticket if you retrace your steps back to t...

n.避孕药，避孕用具( contraceptive的名词复数 )...

footrace的音标：footrace的英式发音音标为：['fʊtreɪs]footrace的美式发音音标为：['fʊtˌreɪs]...

adj.不能回头的，不能再找到的...

contraceptives的音标：contraceptives的英式发音音标为：[kɒntrə'septɪvz]contraceptives的美式发音音标为：[kɒntrə'septɪvz]...

contraceptive的复数形式为：contraceptives...