twelfth 四级

the twelfth of November.

11月12日。

his twelfth birthday.

他12岁生日。

December is the twelfth month of the year.

12月是年中12月。

the cloister is of late twelfth century design.

教堂回廊是12世纪晚期设计。

the twelfth in a series of essays.

系列散文中12篇。

For her twelfth birthday, she asked for a chemistry set.

她要学箱作她12 岁生日礼物。

The unit of weight, incidentally, w as the " as "; one twelfth of this w as the "uncia", from which we get our ounce and inch.

基于上述理解，创造出形式、内容、行为有用，易用，令人满意，并具有技术可行性和商业利益产品。