发出危险信号 (fāchū wēixiǎn xìnhào, send a danger signal)
Grammar & Usage
How it works
This is a verb-object-object structure. 发出 (fāchū) means 'to send out/issue', 危险 (wēixiǎn) is an adjective meaning 'dangerous' or a noun meaning 'danger', and 信号 (xìnhào) means 'signal'. Together, 危险信号 acts as a compound noun 'danger signal', which is the object of 发出. The structure is V + O (Noun Phrase).
Sample sentences
火山在爆发前会发出危险信号，比如地动和气体排放增加。
Before an eruption, volcanoes will send out danger signals, such as ground tremors and increased gas emissions.
传感器检测到异常后，立即发出了危险信号。
After detecting an anomaly, the sensor immediately sent out a danger signal.
经济数据发出了危险信号，表明市场可能面临挑战。
The economic data sent out a danger signal, indicating that the market might face challenges.
Quick facts
Mnemonic
Sign in for a creative sound-alike story that makes "发出危险信号 (fāchū wēixiǎn xìnhào, send a danger signal)" unforgettable 🧠
Get an AI-generated memory hook for 发出危险信号 (fāchū wēixiǎn xìnhào, send a danger signal) — a vivid scene that locks the word in your brain 🧠
Example
火山在爆发前会发出危险信号，比如地动和气体排放增加。
Before an eruption, volcanoes will send out danger signals, such as ground tremors and increased gas emissions.
传感器检测到异常后，立即发出了危险信号。
After detecting an anomaly, the sensor immediately sent out a danger signal.
Sign in for AI-generated examples tailored to your level ✨