first end第一端部firstadj.第一的；最初的adv.首先；第一n.最初；(序数词)第一first type paratyphoid fever甲型副伤寒first episode schizophrenics首发精神分裂症First- aid medical service急救医疗服务first-on set schizophrenia首发精神分裂症first harvest after planting初牧first-order autoregression一阶自回归first Shannon coding theorem香农第一编码定理First clay and terminal clay初终日期first well-known commodity在先知名商品First Norman-Byzantine War第一次诺曼-拜占庭战争(1081-1085)

1. Jim went down well with Mary's parents on his first visit.
   吉姆对玛丽父母的初次访问给他们留下了良好的印象。
2. It's better not to outstay one's welcome, especially on a first visit.
   去做客最好不要呆得太久而惹人讨厌，特别是第一次拜访。
3. Is this your first visit to London?
   这是你第一次访问伦敦吗？
4. It was his first visit to his wife's parents.
   那是他第一次去看望岳父和岳母。