But, can you seal a clacks with a loving kiss?

但是，你能在寄出一封电邮前献上一个充满爱的吻吗？

A hinged valve that permits fluids to flow in only one direction and clacks when the valve closes.

一种铰接的阀，只容许流体单向流动，关闭时发出卡嗒声。