1·She thinks nothing of walking thirty miles a day.
她认为一天步行三十英里不足为奇。
—— 《牛津词典》
2·He was struck down by cancer at the age of thirty.
他三十岁那年被癌症夺去了性命。
—— 《牛津词典》
3·Only thirty students graduated in Chinese last year.
去年只有三十名学生获得汉语学士学位。
—— 《牛津词典》
4·Yesterday no fewer than thirty climbers reached the summit.
昨天不少于三十名登山者到达了顶峰。
—— 《柯林斯英汉双解大词典》
5·The Tornado was about thirty feet from Mace's right wingtip.
“龙卷风”离“梅斯”的右机翼尖约三十英尺。
—— 《柯林斯英汉双解大词典》