两国签署了新的贸易协议。
The two countries signed a new trade ___protocol.
实验室必须严格遵守实验方案以确保结果的准确性。
The lab must strictly follow the ___protocol to ensure accurate results.
蓝牙协议让无线设备之间能够互相通信。
The Bluetooth ___protocol enables wireless devices to communicate with each other.
浙公网安备33010902004675号
