otherwise
otherwise/ˈʌðəwaiz/adv.1.否则，要不然(没有比较级)：Let’s begin, otherwise, it will be too late.我们这就开始吧，不然就太晚了。The sailors would have otherwise fallen into the s···
ouch
ouch /autʃ/interj.(痛苦或惊讶时的叫声)哎哟：Ouch! I’ve stuck the needle in my finger!哎哟！我的手指被针扎了！Ouch! It really hurts.哎哟！真疼啊。
ought
ought/ɔ:t/aux. v.(无时态和人称变化，后接带to的不定式) 1. (表示责任、义务、合适性、必要性、可能性及愿望等)应当，应该：Every citizen ought to obey law.每个公民都应当守法。Teachers o···
ounce
ounce/auns/n.［c］1.盎司(常衡1/16磅，金衡1/12磅；缩为OZ)：One ounce is approximately 28 grams.一盎司大约28克。It is sold by ounce.论盎司出售。2.微量：He hasn’t an ounce of common ···
our/ours/ourselves
our/auə/pron.(we的所有格，形容词性,只用作定语)我们的：in our opinion我们的看法We have done our best.我们已尽了最大努力。Our school is on a river.我们的学校在河边。ours/auəz/pron.···
oust
oust/aust/vt.剥夺，取代；驱逐：oust sb. from office把某人撤职He is ousted political rights.他被剥夺了政治权利。The politician was ousted from office by a vote from members of his o···
out
out/aut/adv.1.(和某些动词连用)出来，到外面：Are you going out tonight?今晚您出去吗? Get out at once.马上出去。She opened a box and took out a cigarette.她打开盒子取出一支烟。2. (和···
outbreak
outbreak/ˈautbreik/n.［c］(战争、情感、火山等的)爆发、(疾病、虫害等的)突然发生：an outbreak of anger大怒；an outbreak of fever发烧；spontaneous outbreak of national feeling agains···
outcome
outcome/ˈautkʌm/n.［c］结果，结局：the final outcome最后结果；the inevitable outcome必然的结果；the ultimate outcome of the strike罢工的最后结果The summitdid yield practical outc···
