vt. 剽窃；偷偷地做；偷窃；vi. 窃取；偷偷地行动；[棒球]偷垒；n. [口]偷窃；便宜货；偷垒；[篮球]断球

n. a stolen base; an instance in which a base runner advances safely during the delivery of a pitch (without the help of a hit or walk or passed ball or wild pitch)

v. take without the owner's consent

v. move stealthily

v. steal a base