a railroad employer who is in charge of a railway yard 同义词：trainmaster, train dispatcher,
例句与用法
1.
Juvenile involvement in crime remained one of the region s policing priorities , with regional police resources working closely with other government departments and non - governmental organisations 总区亦就此展开一连串包括火百合、蓝鸟及yardmaster等扫黄行动，以遏止内地娼妓在区内的非法活动。
2.
Mainland involvement in the vice industry remained problematic with two way permit holders accounting for 73 per cent of all the prostitutes arrested in 2002 as compared to 55 per cent of those arrested in 2001 . a number of proactive anti - vice operations including firelily , bluebird and yardmaster took place to curb mainland prostitutes in the region 二二年，旺角及深水区的色情案件宗数占总区同类罪案数字的绝大部分，而在被捕的娼妓中，持双程证者由二一年的55 %上升至二二年的73 % 。
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