所有这些水龙头可以提出，提供最佳的信号灵敏度和选择性。

All these taps can be moved to provide the best signal sensitivity and selectivity.

youdao

所有这些水龙头可以提出，提供最佳的信号灵敏度和选择性。

All these taps can be moved to provide the best signal sensitivity and selectivity.

youdao