Not having or needing a crew or staff: an unmanned level crossing
More example sentences
- This is only a part of an extensive campaign to highlight precautionary measures to be taken while crossing unmanned level crossings,’ he says.
- Baxter's book was fiction, but we're seeing the same trade-off now in NASA's decision to cancel further unmanned missions and bring down the Hubble space telescope in order to spend more money on manned spaceflight development.
- It also serves in the capacity of deploying unmanned underwater vehicles from it, and it's been an experimental vessel for the Navy's efforts to develop a mine warfare modular system of responding to mine countermeasures.
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