Some, like Damaris De Luna Sanchez, 11, move their hands the way a conductor directs an orchestra, slicing through the air to help them reach the proper intonations.

有些孩子，比如11岁的桑切斯，则像交响乐指挥家一样手臂在空中摇摆着，帮自己掌握汉语的声调。