胶卷或感光片应在日食前装入暗盒.The films and plates are put in their holders the night before the eclipse.他用的是照相暗盒, 最原始的相机.He used a camera obscura, which was a primitive camera.这种数字影像暗盒可以取代感光胶片式暗盒,实现记录飞机训练或作战信息的功能.The digital imaging ...
He looked at Ellen, breathing evenly in her sleep.他看着埃伦，她正呼吸均匀地睡着。Ellen's face wrinkles as if she is about to sneeze.艾伦的脸皱了起来，好像要打喷嚏。Ellen felt both despair and anger at her mother.埃伦对她的母亲感到既绝望又生气。...
婴儿渴的时候，吃奶就会更频繁。When a baby is thirsty, it feeds more often.给小牛吃奶的母牛a cow suckling her calves那个小孩四个月以后就不吃奶了.The child did not nurse after he was four months old....
Oranges, lemons and limes were found to cure scurvy.人们发现橙子、柠檬和酸橙能治疗坏血病。Oranges contain only 35 calories per 100g.每100克橙子仅含35卡的热量。Eating oranges keeps colds at bay.吃橘子可以预防感冒。...