hypothesis
n
(pl -ses ) idea or suggestion that is based on known facts and is used as a basis for reasoning or further investigation (根据已知事实提出并有待於进一步论证或研究的)假说, 假设
put sth forward as a hypothesis 提出一种假说
prove/disprove a hypothesis 证明某种假设正确[不正确].
But I was delighted to be able to say words that my family and a few friends could understand.
是,我却感到欣喜,能够说出我家里人和一些朋友可以理解的词语。
It soon became clear that the straight part of the dance changed when the sun's position changed. If the feeding place was toward the sun, the dancer headed straight upward during the straight part of the wagging dance.