Although oil pumping into the pipeline has stopped, the residual oil in the pipe is now the main concern.

虽然向管道中泵油已停止，管道中的残油目前成为了主要关注对象。

youdao

Although oil pumping into the pipeline has stopped, the residual oil in the pipe is now the main concern.

虽然向管道中泵油已停止，管道中的残油目前成为了主要关注对象。

youdao