CATALYSTIC SYNTHESIS OF BENZYL ACETATE BY SUPPORTED HETEROPOLYACID PW_(12)/SiO_2
PW_(12)/SiO_2催化合成乙酸苄酯
Preparation,characterization and performances of PW_(12)/PANI/TiO_2 nano-composite photocatalyst
PW_(12)/PANI/TiO_2复合纳米材料的制备、表征及光催化性能研究
On December 12, 1901.
在1901年的12月12日。
I got a time penalty of 12 seconds.
我被罚 12 秒。
Er...twelve weeks altogether.
哦……总共12周。
Twelve twins twirled twelve twigs twelve times.
12 个孪生子12 次捻转12 根小树枝。
And six billion (1999) in 12 years.
60亿（1999）用了12年。
It was twelve noon on Wednesday.
星期三中午12点，
We have lunch at twelve.
我们12点吃午餐。
Jim! It's twelve o'clock now.
吉姆！现在12点了。
I had lunch at half past twelve.
我在12点半吃的。
I have lunch at half past twelve.
我12点半吃午饭。
Why, it's about twelve.
哎呀，都快12点了。
Halloween, October 31
万圣节，12月31日
a case(ie 12 bottles)of champagne
一箱香槟酒（12 瓶）.
in 10 to 12 feet of water
水深10 到12 英尺
Here you are, 12 yuan, please.
到了，请付12元。
The birth rate have fall to twelve per hundred.
出生率下降到12％。
