up train; go upstream; submit to superior
Meanings
3 senses · 9 examplesverb
(of trains) to travel toward the capital or main line
technicalIn China's railway system, up trains travel toward Beijing (or the main line) and use even numbers (e.g., 12, 104). Down trains (下行) use odd numbers.
The up train from Beijing to Shanghai has already entered the station.
Up trains use even numbers, such as Train G12.
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Excuse me, is this train going up or down?
verb
(of boats) to sail upstream; to go from lower to upper reaches
Refers to vessels traveling against the current toward the river's source.
The fleet is traveling up the Yangtze River, preparing to arrive in Chongqing.
Going upstream requires more time and fuel than going downstream.
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The sailors rowed hard to move the boats upstream.
verb
(of official documents) to be sent from subordinate to superior
formalRefers to official correspondence sent upward in the administrative hierarchy. The opposite is 下行 (documents sent from superior to subordinate).
This report needs to be submitted to the department manager; it is an upward-bound official document.
Upward correspondence must follow strict formatting standards.
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Requests for instructions should be submitted to higher authorities in upward-reporting form.