I led a very confined life in my village so I suppose that I wanted to spread my wings.我在村里生活很封闭，所以我想出去闯荡一番。Coughs and sneezes spread infections much faster in a warm atmos-phere.在温暖的环境中，咳嗽和喷嚏传播疾病的速度要快得多。Infection can sp...
The conditions are ripe for the spread of disease.这种疾病传播的条件已经成熟。The move follows growing public concern over the spread of the disease.针对公众对该疾病的不断蔓延日益担忧，从而出台了这一举措。He campaigned for peace and against the spread of nuclear...
他们测试了这台发射机的发射范围.They tested the range of this transmitter.只要在发射机中存在调制信号, 就含有旁频带出现.When there is a modulated signal from transmitter, there are side bands.他们住在无线电发射机的有效范围以内.They live within range of the transmitter....