/beɪs ||; bes/noun[C] 1 the lowest part of sth, especially the part on which it stands or at which it is fixed or connected to sth 底部；底座: the base of a column/glass/box 圆柱；玻璃杯；箱子底部I felt a terrible pain at the base of my spine. 我觉得脊柱底部很痛。
2 an idea, fact, etc from which sth develops or is made 起点；基础: With these ingredients as a base, you can create all sorts of interesting dishes. 有了这些基本材料，你可以烹调出各种有趣的菜式。The country needs a strong economic base. 该国需要一个强固的经济基础。
3 a place used as a centre from which activities are done or controlled （进行活动的）基地，根据地: This hotel is an ideal base for touring the region. 到这地区游览，入住这家旅馆最理想。
4 a military centre from which the armed forces operate 军事基地；据点: an army base 陆军基地
5 (in baseball) one of the four points that a runner must touch （棒球）垒
6 a chemical substance with a pH value of more than 7 碱；盐基 ☞Look at acid and alkali. 参看 acid 及 alkali。 ☞picture at pH 见 pH 插图