There was a sharp " phut" , no louder than a bubble of air escaping from a tube of toothpaste.
一声尖锐的“扑通”声响起，声音不亚于牙膏管中冒出的气泡。
英语百科
Phut
Phut or Put (Hebrew: פוט pûṭ; Septuagint Greek Φουδ Phoud) is the third son of Ham (one of the sons of Noah), in the biblical Table of Nations (Genesis 10:6; cf. 1 Chronicles 1:8). The name Put (or Phut) is also used in the Bible for the people or nation said to be descended from him, usually placed in Ancient Libya, but connections are sometimes proposed with the Land of Punt known from Ancient Egyptian annals.