1.
We put thirty spokes together and call it a wheel; But it is the center hole that makes the wagon move.
" 三十辐, 共一毂, 当其无, 有车之用"
2.
Thirty Spokes in one Hub,Carriage Specifications and the Written Time of The Classic of the Way and Virtue;
“三十辐同一毂”·车制·《老子》成书时代
3.
Thirty, thirty, thirty!
三十、三十。 三十块钱！
4.
thirteen, fourteen, fifteen!
十三，十四，十五！
5.
One, two, three... eighteen, nineteen.
一，二，三……十八，十九。
6.
Thirty and ten is forty.
三十加上十是四十。
7.
Twenty plus sixteen equals thirty-six.
二十加十六等于三十六。
8.
Twenty-nine minus thirteen equals sixteen.
二十九减十三等于十六。
9.
My number is thirteen, thirteen.
我的号码是十三，十三。
10.
One, two, three... nineteen.
一，二，三……十九。
11.
twelve twenty, thirteen thirty-five,
十二点二十，十三点三十五，
12.
(ii) to Articles 13 to 17.
（ii）第十三条至第十七条。
13.
Halloween is celebrated on October 31.
万圣节是十月三十一号。
14.
Today is the thirtieth of December.
今天是十二月三十日。
15.
The temperature ranges from ten to thirty degrees.
气温在十至三十度之间。
16.
What's thirty and forty-four?
三十加四十四是多少？
17.
Ten people were killed and thirty injured.
十人死亡，三十人受伤。
18.
Thirty divided by two is fifteen.
三十除以二得十五。