send a signal (to sb) that idiom
向…发出警告
to show or warn that something is true
The change should send a signal to financial institutions that we are serious about tackling fraud. 这种改变应该能向金融机构发出信号：我们将严肃打击诈骗行为。
This pay deal sends a clear signal that we value our employees. 这项工资协议传达了一个明确的信息：我们重视员工的价值。