n. 抵押品, 挑战\\nvt. 以...为担保, 以...为赌注\\nn. 抵押品, 标准度量, 计量器\\nvt. 精确计量, 估计
🗣️ 情景例句
Earth day should be every day.
每一天都应该是地球日。
Can't be picky.
不可以偏食。
Professor Karl von Frisch, an Austrian scientist, spent many years of his life researching the amazing ways honey bees communicate in their dark hives.