What's weird is that all these different sounds made with different articulators are represented with just one symbol and considered to be part of the same phonetic family, known as rhotics.

奇怪的是，用不同的发音器发出的所有这些不同的声音只用一个符号表示， 并被认为是同一个语音家族的一部分，称为 rhotics。