permanent way
(rail transport, Britain, Australia) The track and ballast (bed) of a railway.
past participle of take one's half out of the middle
(botany) One of a proposed class of flowering plants growing on the roots of other plants and lacking green foliage.
plural of hydro pole
点検班は嵐の後、列車の安全運行を回復するために線路とバラスト（路床）の修理に週末を費やした。
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