retraction line造句

例句与造句

1. The "'voiceless alveolar stop "'is a type of consonantal sound used in many dental stop can be distinguished with the underbridge diacritic, } }, the postalveolar with a retraction line, } }, and the Extensions to the IPA have a double underline diacritic which can be used to explicitly specify an alveolar pronunciation, } }.
2. It's difficult to find retraction line in a sentence. 用retraction line造句挺难的