time-lag

n interval of time between two connected events （两件相关事情的）时间间隔; 时滞: the time-lag between a flash of lightning and the thunder 闪电和打雷相隔的时间 * the time-lag between research and development研究与开发之间相隔的时间.

till, tillage, tiller, tilt, tilted, tilth, timber, timber-line, timber-wolf, timbered, timbre, time, time bomb, time exposure, time warp, time zone, time-card (also `time-sheet), time-consuming, time-fuse, time-honoured (US time-honored), time-limit, time-saving, time-scale, time-server, time-serving, time-sharing, time-sheet, time-signal, time-switch, time-table, time-worn, timekeeper, timeless, timelessly, timelessness, timeliness, timely, timepiece, timer, times,