二百五十多年前的惠更斯目镜今天还在广泛使用.The Huygens ocular , which dates back over 250 years is still in wide use today.此时场镜上的划痕和小点会在接目镜中看见.Then the scratches and spots on the field lens would be visible at the eye lens.在这两种仪器中, 物镜所成的象都是通...
The rescuers were beaten back by strong winds and currents.救援人员因风浪太大而被迫中断工作。In a warm-up game for the World Cup, Uruguay have beaten England.在世界杯热身赛中，乌拉圭队打败了英格兰队。They would look out through the cracks of their weather-be...
他双手拢在嘴边，大声呼喊黛安娜。He cupped his hands around his mouth and called out for Diane.他冲进一幢房子呼喊求救。He forced his way into a house shouting for help.路过的人听到了他求救的呼喊。Passers-by heard his cries for help....