| ประโยคภาษาจีน : 中文句子 | 
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|  mó膜  náng囊  yǒu有  guī lǜ规律  de的  bǎi dòng摆动  yǐ以  tí gōng提供  yì xiē一些  fāng xiàng xìng方向性  de的  kòng zhì控制  dàn但  tā men它们  zhǔ yào主要  shì是  suí bō zhú liú随波逐流  tā它  tōng guò通过  pái chū排出  qì tǐ气体  lái来  xià jiàng下降  tōng guò通过  yā suō压缩  qì náng气囊  pái chū排出  shuǐ lái水来  shàng shēng上升 | 
| The bell pulses to give some directional control, but mostly they drift with the wind. It expels gas to descend, and expels water from trim bladders to rise. |