Sightseeing is best done either by tour bus, on foot, or by bicycle.最好是乘坐旅游巴士、步行或骑自行车观光。

Either she goes or I go.要么她去, 要么我去。

You can have either ice cream or yoghurt.你可以吃冰激凌或喝酸奶。

There had been no sign of either breathlessness or chest pain before the heart attack.心脏病发前并未出现呼吸困难或胸痛的病征。