1·A forest fire is sweeping across portions of north Maine this evening.
今天傍晚一场森林大火正席卷着缅因州北部的部分地区。
—— 《柯林斯英汉双解大词典》
2·It's not about counting calories and micro analyzing portions.
这不是关于计算卡路里和微观分析部分。
3·The adult ones converge on remaining portions of healthy coral and feed hungrily.
成年珊瑚聚集在健康珊瑚的剩余部分上，饥饿地进食。
4·Nitrogen-oxide emissions during the cruising portions of the flight fell by around a quarter.
飞行中巡航部分的氮氧化物的排放量下降了四分之一左右。
5·The listening, speaking, and writing sections include written transcripts of the audio portions of the test.
听力、口语和写作部分包括测试中音频部分的文本。