例句:The cook needs a gram of vinegar.
廚師需要一克醋。
grammar n. 文法,語法
例句:That is not, properly speaking ,a dictionary but a grammar book.
嚴(yán)格地說,那不是一本字典,而是一本語法書。
grammatical adj. 文法的,合乎文法的
例句:I stumbled across a grammatical error in your composition.
我在你的作文中偶然發(fā)現(xiàn)了一個語法錯誤。
watt 瓦特
例句:The unit of power is watt.
功率的單位是瓦特。
voltage n.電壓,伏特數(shù)
例句:Its voltage has not been exceeded.
它的電壓沒有超過。
ton n.噸,大量,許多
例句:The professor has a ton of work to do.
那個教授有一大堆工作要做。
acre n.英;畝
例句:The shepherd has penned up the sheep in the four acre field.
牧羊人把羊群圍在那塊四英畝的土地上。
gallon n.加侖
例句:One gallon of water weighs 4 pounds.
一加侖水重4磅。