I.up [美 əp, 英 ʌp]副up often appears as the second element of certain verb structures in English (back up, pick up, sit up, etc). For translations, see the relevant verb entry (back, pick, sit, etc).
Uniforms for boys in the winter usually consist of a zip up sweater and trousers and a collared shirt (usually white), with short or long trousers in the summer.