例句與造句

1. But no manned missions to an asteroid are planned.
2. During a speech at the Kennedy Space Center on April 15, 2010, Obama proposed a new heavy-lift vehicle ( HLV ) to replace the formerly planned Ares V . In his speech, Obama called for a manned mission to an asteroid as soon as 2025, and a manned mission to Mars orbit by the mid-2030s.
3. It's difficult to find manned mission to an asteroid in a sentence. 用manned mission to an asteroid造句挺難的