[tag=JJ] [□ | □]
[tag=JJ] [□ | □ | □]
[tag=JJ] [!□ | □]
Simply by manipulating air pressure and muscle tension in its vocal organ , or syrinx , a canary can generate an amazingly varied repertoire of trills , warbles , and other melodic syllables . the white and black players cooperate , becoming effectively a single player , " Erik Demaine explains . " A direct product of the work of Eddington and Milne , this effort was based on large dimensionless numbers , such as the ratio of the electrical and gravitational forces between an electron and a proton . " Walker noted that department officials had learned from their Deepwater problems and are moving more cautiously on the program , which covers both physical fencing and beefing up cameras , sensors and other technology on the border , and have been allocating funds for only small portions at a time . That 's offered at The Hills Dental Spa in Austin , Texas , where amenities also include herbal teas and lavender aromatherapy candles to disguise that medicinal dental office smell .