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- Males have no penises and are armed with a genital opening which looks little different from that of a female. 雄鸟没有阴茎只有一个与雌鸟相比区别不大的生殖管道开口。
- ovipositor A tubular extension of the female genital opening used to facilitate egg deposition, e.g. in Rhodeus sericeus. 产卵管母鱼生殖口的管状延长物被用来促进卵的排出，例如丝鳑鲏。
- Pea pods burst open when overripe. 豌豆过熟就会爆裂。
- Open tender for purchasing power transformer. 公开招标购买电力运输设备。
- We bivouacked on the open plain. 我们在开阔的原野上露营。
- oviduct A tube leading from the ovary to the cloaca or external genital opening along which the ova pass during spawning. 卵管从卵巢到泄殖腔或外部生殖口的管，在产卵时，可导引卵沿著管而排出。
- I had to use force in opening the door. 我不得不用力开那一扇门。
- This little gadget's great for opening tins. 这小玩意儿开罐头挺好用。
- She's go to play the opening bar of the sonata. 她准备演奏这支奏鸣曲的开始数小节。
- Two smaller screens will be opening in May. 五月份将有两家小型电影院开业。
- Thank you. How long will this offer be open? 谢谢。这个报价的有效期多长？
- Open the shutter and see what the weather is like. 打开百叶窗，看看外面的天气如何。
- The fresh air blew in from the open window. 新鲜空气从开着的窗户吹进来。
- Hum the opening bars of your favourite tune. 哼一哼你喜爱的曲子的开头几个小节。
- We were obligated to attend the opening ceremony. 我们有必要参加开幕式。
- The mayor made a speech at the opening. 市长在开幕式上发表了演说。
- The shop is open from this day onwards. 该店从今天起开始营业。
- Please open a window to allow the air to circulate. 打开窗子让空气流通。
- This drawer is too tight for me to open it. 这抽屉太紧了，我打不开。
- You may open a current account at a bank. 你可以在银行开立一个活期帐户。
