1. 定時器一種計時器，尤指控制時間間隔并指示間隔結(jié)束的那種計時器，如爐子上的計時器
   A timepiece, especially one used for measuring and signaling the end of time intervals, as on a stove.
2. 鐘用來計時。
   A clock measures time.
3. 沙漏；滴漏用于計時的儀器，由兩個玻璃盒組成，中由一細頸相連，盒內(nèi)裝有一定量的沙子，水銀或其他流動物質(zhì)，這些物質(zhì)在一固定量的時間里，通常為一個小時，從上方的盒內(nèi)慢慢流入下方的盒子中
   An instrument for measuring time, consisting of two glass chambers connected by a narrow neck and containing a quantity of sand, mercury, or another flowing substance that trickles from the upper chamber to the lower in a fixed amount of time, often one hour.
4. 計時學時間的科學測量
   The scientific measurement of time.

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時的英語翻譯：