fluid coking

例句：

1. 1. The fluidity of the oil makes it difficult to pump.
   油的流动性使得泵送困难。
2. 2. The new design has a fluidity that is unparalleled in its class.
   新设计具有无与伦比的流畅性，在同类中独一无二。
3. 3. The engineers worked tirelessly to ensure the fluidity of the pipeline system.
   工程师们不懈努力，确保管道系统的流畅性。