stationary orbit不: a block of wood动: harness cause disorder stir ...轨道: track; pathway; rail; runway ...不扰动轨道: undisturbed orbit; unperturbed orbit电动轨道车: electric rail car下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:不动轨道，即可在微信中查询翻译
