| Topic to avoid, metaphorically |
LA Times Daily |
28 Oct 2025 |
| Power source for some trains |
LA Times Daily |
25 Jun 2025 |
| *Subway power source |
Universal |
26 May 2022 |
| Dangerous bar |
LA Times Daily |
09 May 2020 |
| Dangerous bar |
The Washington Post |
09 May 2020 |
| Power source for a subway train |
New York Times |
15 Jun 2016 |
| Power source for a subway train |
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| Subway power source |
New York Times |
09 Apr 2015 |
| Subway power source |
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| Dangerous subway track |
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| *Supplier of electricity to subway trains |
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| Train's electricity source |
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| It electrifies cars through contact shoes |
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| Subway danger |
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| Subway power conductor |
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| Source of electric current. |
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