跟踪: follow the tracks of; tail after; following; follow-up tracing; track; tracking; trail; lock-on; shadow sb.: 雪地跟踪 follow sb.'s tracks in the snow; 跟踪嫌疑犯 tail after a suspect; 跟踪敌舰 shadow t
面积: [数学] area 短语和例子建筑面积 built-up area; 居住面积 dwelling area; floor space; 大面积丰收 bumper harvest over an extensive area; 茶叶种植面积 the acreage under tea trees
