请问下列英语口语怎么读

1. thirty percent
2.sash width is in between 3 meters and 4 meters
3. sash Height is less than a thousand and 9 hundreds millimeter
4. sash height is greater than or equal to a thousand and 9 hundreds millimeter
第三个spell错了..

数字我就不说了.
1.百分数,先说数字再说percent
30% thirty percent
大于等于 XX is and more than XX
小于等于 XX is and less than
大于 XX is more than XX
小于 XX is less than XX

可以这么理解

thirty percent
between 3meter and 4meter.
below 1.9meter.
more than 1.9meter