1、In English, "r" is often pronounced in a postvocalic position.

在英语中，"r"经常在元音音位之后发音。

2、The pronunciation of "t" can vary depending on its position in a word. In postvocalic position, it is often pronounced as a flap or tap sound.

"t"的发音会根据它在单词中的位置而有所不同。在元音音位之后，它通常发音为一个拍音或敲音。