أرسل هذا في رسالة قصيرة: A study on the feasibility of constructing an underground reservoir in Singapore with an integrated pumped-storage hydropower system (focusing on the water source)

  _  __    ______    _  _    _    _             
 | |/ //  /_   _//  | \| || | || | ||   ____    
 | ' //    -| ||-   |  ' || | || | ||  |    \\  
 | . \\    _| ||_   | .  || | \\_/ ||  | [] ||  
 |_|\_\\  /_____//  |_|\_||  \____//   |  __//  
 `-` --`  `-----`   `-` -`    `---`    |_|`-`   
                                       `-`