laconic

1. ADJ If you describe someone as laconic, you mean that they use very few words to say something, so that they seem casual or unfriendly. 寡言的; 言简意赅的

Usually so laconic in the office, Dr. Lahey seemed less guarded, more relaxed. 平常在办公室里寡言少语的莱希医生似乎少了些拘谨，多了几分轻松。