您要查找的是不是：
- four frequency diplex telegraphy 双路移频制电报
- four frequency diplex comunication 四频同向双工通信
- four frequency diplex 双路移频制
- The division into four frequency ranges was made to correspond with typical frequency limits on four different types of recording instruments. 分成4个频率范围是为了与4种不同类型记录仪器的典型频率限度相适应。
- four frequency differential laser gyro 四频差动激光陀螺
- four frequency duplex telegraphy 四频双工电报
- four frequency dilex communication [计] 四频双通信
- It is clear to all of us that two plus two is four. 二加二等于四对我们大家都很清楚。
- He wove four plots together into a novel. 他把四条情节编成一部小说。
- We have tea at four o'clock in the afternoon. 我们在下午四点钟喝茶。
- The town boasts four swimming pools. 这座城镇以拥有四个游泳池而自豪。
- Our football team won by four goals to nil. 我们的足球队以四比零取胜。
- He lay back and hit the ball for four. 他向后弯身击中球，得了4分。
- I was clean broke in less than four days. 不到四天我就一个钱也没有了。
- I'll look out for you at about four. 我4点钟左右找你。
- He showed us four case studies of disturbed girls. 他给我们看了4位精神失常姑娘的病历。
- My house is four miles distance from the sea. 我家离海四英里。
- Our team beat them hollow by four clear goals. 我们队以净胜4分彻底击败了他们。
- The leap year comes around once in four years. 每四年有一个闰年。
- The soldiers counted off from the left by four. 士兵们从左起四个一组大声报数。
