Module 5 Explanations for new words and phrases1
expand vi
become or make larger or more extensive 扩大/扩充/扩展/膨胀;伸展/开,张/展开 e
expand his chest 扩胸 expand trade/export 扩大贸易/出口Their business expanded into other hotels and properties
业务扩展到了其他旅馆和房地产
The ranks of the teachers are constantly expanding
教师队伍日益扩大了
He does exercises to expand his chest
他做体操扩胸 Metals expand by heat
金属受热而膨胀
expand with heat 热胀 Many flowers expand in the sunshine
花儿在阳光下绽放
contract vi
decrease in size, number, or range 收缩/缩小/缩短/缩紧;和……订合同;When you heat a metal, does it contract or expand
当你给金属加热时,它会收缩还是膨胀
Metal contracts as it becomes cool
金属冷却时体积缩小
contract with cold 冷缩Generally speaking, a body will expand when heated and contract when cooled 物体热涨冷缩We contracted with a shoe factory for 4000 pairs of shoes