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- Objective:To understand the mycoplasma s infection rate and drug resistance of childbearing age women in this area. 目的:了解本地區育齡婦女生殖道支原體感染情況及耐藥性,以指導臨床合理用藥。
- four 'F's infection 四個「F」傳染(手指、糞便、食物、蒼蠅:fingers, feces, foods, flies)
- He earned four A's in the final examinations. 他期末考試四門功課得優。
- Two weeks after the final immunization, the animals were challenged with 200 T. s infective muscle larvae (ML) per mice. 末次免疫后1周，每隻小鼠攻擊感染200條旋毛蟲感染性肌幼蟲（ML），感染后5周用消化法檢查ML負荷。
- It is clear to all of us that two plus two is four. 二加二等於四對我們大家都很清楚。
- He wove four plots together into a novel. 他把四條情節編成一部小說。
- We have tea at four o'clock in the afternoon. 我們在下午四點鐘喝茶。
- The town boasts four swimming pools. 這座城鎮以擁有四個游泳池而自豪。
- Our football team won by four goals to nil. 我們的足球隊以四比零取勝。
- He lay back and hit the ball for four. 他向後彎身擊中球，得了4分。
- I was clean broke in less than four days. 不到四天我就一個錢也沒有了。
- I'll look out for you at about four. 我4點鐘左右找你。
- He showed us four case studies of disturbed girls. 他給我們看了4位精神失常姑娘的病歷。
- My house is four miles distance from the sea. 我家離海四英里。
- Our team beat them hollow by four clear goals. 我們隊以凈勝4分徹底擊敗了他們。
- The leap year comes around once in four years. 每四年有一個閏年。
- The soldiers counted off from the left by four. 士兵們從左起四個一組大聲報數。
- He wooed four girls before finally marrying one. 他在結婚之前曾向四個姑娘求過婚。
- Four avenues radiate from the square. 四條林蔭大道從那廣場向四方延伸。
- There are four verses in each poem. 每首詩有四個詩節。
