first-class-主題

first-class

adj. 頭等的, 上等的 
adv. 頭等地

詞形變化：

副詞: first class |

英文解釋:

名詞 first-class:

the highest rank in a classification

同義詞：first class

mail that includes letters and postcards and packages sealed against inspection

同義詞：first class, 1st class, first-class mail, 1st-class mail

the most expensive accommodations on a ship or train or plane

同義詞：first class

形容詞 first-class:

of the highest quality

同義詞：excellent, fantabulous

副詞 first-class:

by first-class conveyance; with first-class accommodations

以上來源於大辭典