advanced and retracted tongue root造句

Arabic emphatic consonants were } } etc . More or less rounded, raised, lowered, advanced, and retracted vowels were marked } } etc .; the diacritic would not move under the letter for some time yet, and the latter two would later be coopted for advanced and retracted tongue root.
It's difficult to find advanced and retracted tongue root in a sentence. 用advanced and retracted tongue root造句挺难的