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- This is her first pregnancy. 这是她第一次怀孕。
- I could tell by looking at Bong-Soons teeth that she was very young, perhaps about a year old and so this was most likely her first pregnancy. 我从奉顺的牙,得知她还很年轻,大约只有一岁而已,这次很可能是她第一次怀孕。
- Among female lawyers, the average age of first pregnancy was 39, "reflecting the all-or-nothing pressure that the sector places on individuals", she said. 她说,女律师首次怀孕的平均年龄为39岁,“这反映了这个行业对从业者的压力是一种极端的状况,要么压力很大,要么没有压力。
- Tracing back her history, in the third trimester of her first pregnancy, the same episode occurred in her left eye resulting in blindness and optic atrophy. 追溯其病史，病人在前一次怀孕，亦在怀孕第三期出现左眼视力急遽丧失，以致左眼失明，视神经萎缩。
- Though I missed sharing my first pregnancy with Mom and Dad and the rest of my family,since we were in Colorado and they were in Illinois,that shirt helped remind me of their warmth and protection. 虽然我第一次怀孕期没法和爸、妈及家人共度，我们在科罗拉多，而他们在伊利诺州，但这件衬衫使我想起他们给我的温暖和保护。
- Is this your first pregnancy? 这是第一胎吗?
- Though I missed sharing my first pregnancy with Mom and Dad and the rest of my family, since we were in Colorado and they were in Illinois, that shirt helped remind me of their warmth and protection. 虽然我第一次怀孕期没法和爸、妈及家人共度，我们在科罗拉多，而他们在伊利诺州，但这件衬衫使我想起他们给我的温暖和保护。
- Previous medical history disclosed an episode of acute arthritis of the hands and feet which occurred 3 years earlier (and terminated spontaneously after a week) and a normal first pregnancy before starting contraceptive therapy. 既往史：3年前有偶发性手、足关节炎(1周后自行好转)和用避孕药前的一次正常妊娠。
- Among parous women, the OR for ever use was 1.29, while the OR for OC use before a first full-term pregnancy was 1.44, higher than if OCs were used only after the first pregnancy (1.15). 经产妇OC使用与乳腺癌发病率增加相关性优势比为1.;29，而首次足月怀孕前使用OC者其优势比为1
- Some of those factors might be the use of birth control pills, earlier menstruation, rising rates of obesity, more women smoking, and later ages at first pregnancies. 其中部分原因可能与使用避孕药，较早出现月经初潮，肥胖比例增加，更多妇女吸烟，以及高龄的初次怀孕等有关。
- Leaving her first job was a watershed in her life. 辞去她的第一份工作是她生活中的一个转折点。
- The effects of first pregnancy in elder age on the prognosis 高龄初产对妊娠结局的影响
- Cook the meat quickly at first to seal in the juices. 一开始要大火烧肉，以便保存肉汁。
- In the word "mother" the stress is on the first syllable. 在"mother"这一字里，重音在第一个音节上。,在＂mother＂这一字里，重音在第一个音节上。
- His illness was more serious than the doctor first thought. 他的病较医生原来以为的更严重。
- Passengers with cars must embark first. 带汽车的乘客必须先上船。
- Bob teed off on the new pitcher's first delivery. 鲍勃猛击那新投手所投的第一个球。
- Alarmed at the first sound, we hit the dirt. 第一声警报一响我们就迅速卧倒。
- She struck up the first carol on the grand piano. 她在那架大钢琴上演奏起第一支颂歌。
- He picked a winning number on the first draw. 他第一次便抽到一个中奖号码。
