🗣️ 情景例句
Tongue muscles'training is of great importance in learning any foreigh language.
口腔肌肉训练在学习任何语言时都是非常重要的。
To know everything is to know nothing.
事事皆知，事事不懂。
Hello.7-5-4-double 6-2.
喂，7-5-4，两个6，2。