1. By using a considerably longer and larger equipment than the hand alone, by distributing the up-and-down motions among four components instead of two, and by using the powerful muscles of the shoulder and chest instead of the weak forearm muscles, we are infinitely better off in terms of economy, endurance, and tone quality.
由于所有器官都在有效地合作，所以疲劳的现象就不可能出现，甚至在很费力的乐节中也不会有疲劳的现象，而且能有更好的音色弹出，与大师音乐等同。
2. Parents should pay special attention to whether the baby bronchiole issues, or whether there痰多caused by respiratory obstruction, and that leads to the causes of neonatal respiratory distress include: low birth weight, the mother has a history of diabetes, premature rupture of membranes, meconium pollution, birth mother irregular fetal heart tone, prolapsed umbilical cord, the fetus had cooked, prematurity, multiple births, chest, heart or respiratory abnormalities.
家长要特别留意宝宝是否有细支气管方面的问题，或是否有痰多造成呼吸阻塞的现象，导致新生儿呼吸窘迫的原因包括：出生时体重过低、母亲有糖尿病史、胎膜过早破裂、胎便污染、妈妈分娩时胎心音不规则、脐带脱垂、胎儿过熟、早产、多胞胎、胸腔、心脏或呼吸道异常。
3. There are two tone qualities in the human being, that is chest voice and falsetto.
人类声音从生理上分为胸声和假声二类。