vector
/ˈvektə(r); `vɛktɚ/ n
1 (mathematics 数) quantitythat has both magnitude and direction, eg velocity 矢量; 向量. Cf 参看 scalar.
2 (biology 生) organism (esp an insect) that transmits a particular disease or infection （传播疾病的）媒介生物, （尤指）媒介昆虫. Cf 参看 carrier 4.