This was not the only danger signal.
这不是唯一的危险信号。
A red lamp is often a danger signal.
红灯常常是危险的信号。
A red signal is often used as a danger signal.
红灯常常被当作危险的信号。
Rapid breathing is a danger signal and you should call your doctor.
呼吸急促是个危险的征兆，该去请你的医生了。
A train must not pass a signal that is at danger.
火车切不可越过危险信号。
The researchers believe it may also help plants to signal danger to one another.
科学家相信，作物释放这种物质也有助于向其他作物传递面临威胁的信号。
When they are in danger at sea, they send out an "SOS" signal.
当他们在海上遇到危险时，就发出“SOS”的信号。
A red light is usually a signal of danger.
红灯通常是危险的信号。
A red light is a signal of danger.
红灯是危险的信号。
A red light is usually a signal of danger.
红灯通常是危险信号。
A red light is usually a signal of danger.
红灯通常是危险信号。
应用推荐