光指示器经常与幻灯片放映机一起使用.A light pointer is often useful with a slide projector.学校的视听设备包括放映机和录音机.The school's audio apparatus includes films and records.电影放映机每秒24次重复这个过程,每次一幅图像.It repeats this process with a new image 24 t...
The couple had helped in the hunt for the toddlers.这对夫妇曾帮着搜寻那些幼童。The scriptwriter helped him to adapt his novel for the screen.编剧帮助他将其所著小说改编成电影。Jane's goals helped Britain win third place in the Barcelona games.简的进球...
To map 100 mutants by this method would necessitate nearly 5,000 crosses.用这种方法来绘制100个突变型的遗传图就要做5000个杂交.The agglomeration and sintering of fine particles can necessitate a lowering in temperature of operation.由于微粒易于聚集和烧结,...
有些粮食作物歉收。但棉花的收成仍相当不错。Some of the food crops failed. However, the cotton did quite well.恶劣天气使今年的收成受到了损失。Unfavourable weather has had damaging effects on this year's harvest.降雨量决定着收成的好坏.The amount of rainfall determin...