关于Shuttle描述的翻译? the shuttle will stay there while the line or chamber connected to the outlet port is charged and/or discharged and will only shift when pressure is applied to the inlet port it is blocking at that time. 难点在最后的it is 部分,个人理解句子成分如下,楼主再试下。 the shuttle will stay there while the line or chamber connected to the outlet port is charged and/or discharged and will only shift when pressure is applied to the inlet port it (=that ,指代 the inlet port) is blocking at that time . 主语 + 谓语 + 状语 + (并列)谓语 + 状语 ( 内含定语 ) -----------------------------------------------------fyi 查看更多