快车在3小时以内走完去渥太华的旅程.A fast train does the journey to Ottawa in three hours.太棒了! 你在渥太华能呆多久?Fantastic. How long are you staying in Ottawa?我是在渥太华市中心打电话.I'm calling from downtown Ottawa....
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。Coughs and sneezes spread infections.咳嗽和打喷嚏会传播传染病。Sneezes are not the olny way of catching a cold.打喷嚏并不是得了感冒的唯一症状....