VOA慢速英语:新基因试验有助于发现食物中毒

sequencing – gerund. determining the order of, especially nucleotides in DNA or RNA or amino acids in a protein.

lettuce – n. a plant that has large leaves that are eaten especially in salads

caramel – n. a light brown candy made from butter, sugar, and milk or cream

outbreak – v. a sudden start or increase of fighting or disease

contaminate – v. to make something dangerous, dirty, or impure by adding something harmful or undesirable to it

specimen – n. a small amount or piece of something that can be tested or examined

strain – n. a kind or sort of something

automate – v. to run or operate something by using machines, computers, or something else, instead of people to do the work

match – n. a person or thing that is an exact counterpart of another