1·为提高海南霉素产量，分别对其产生菌进行氮离子束注入、原生质体再生等处理，获得高产菌株2-7、Y81。
High producing mutants 2 7 and Y81 of hainanmycin were obtained by ion beam implantation or protoplast regeneration.
2·7除以2，商3余1。
Divide 2 into 7, and the answer is 3, remainder 1.
—— 《牛津词典》
3·9％的利息减去7％的通货膨胀等于2％。
9 percent interest less 7 percent inflation equals 2 percent.
—— 《柯林斯英汉双解大词典》
4·在1967年欧洲的疾病爆发中，大多数患者在症状发作后2至7天出现非瘙痒性皮疹。
In the 1967 European outbreak, a non-itchy rash was a feature noted in most patients between 2 and 7 days after symptom onset.
5·你昨天晚上看了第二频道7点钟的节目了吗？
Did you watch the 7 o'clock program on Channel 2 yesterday evening?
6·每个鸡蛋给你提供7克，芝士提供6克，橙子提供大约2克。
Each egg gives you 7 grams, the cheese gives you about 6 grams and the orange — about 2 grams.
7·您的航班会在7：00从希思罗机场2号航站楼起飞。
Your flight leaves from Heathrow at 7:00 from Terminal 2.
8·时间是下午2点半到4点半，晚上7点到8点，但记住，你在同一时间只能见两个人。
They're in the afternoon from 2:30 to 4:30 and in the evening from 7 to 8, but remember that only two people can see you at the same time.
9·我想01273开头的那个是旧号码，所以用这个号码吧：01444732900。
I think the one that begins 0-1-2-7-3 is an old one so use this one: it's 0-1-4-double 4-7-3-2-9-double zero.
10·白鲟体长约2到3米，可长至7米以上。
The Chinese paddlefish was about 2 to 3 meters long and could grow longer than 7 meters.