n. the cardinal number that is the product of ten and three
s. being ten more than twenty
num. 三十, 三十个
1. I have thirty apples in my basket.
我篮子里有三十个苹果。
2. She is thirty years old this year.
她今年三十岁。
3. The meeting will start at thirty minutes past two.
会议将在两点半开始。