speculations

例句:

• The amount of likely fruitless speculations is downright depressing.
  来自SA
• Your speculations were all quite close to the truth.
  你的揣测都很接近于事实.
  
• This possibility gives rise to interesting speculations.
  这种可能性引起了有趣的推测.
  
• Speculations about its nature have been going on for literally thousands of years.
  关于它的实质的种种推测,确实已进行了数千年之久.
  
• No data of course, just lots of speculations.
  来自SA
• By loans...and other speculations, he achieved his million.
  来自R. P. Ward