| 释义 |
生物钟shēngwùzhōng生物生命活动的周期性节律。这种节律,经过长时期的适应,与自然界的节律(如昼夜变化、四季变化)相一致。植物在每年的一定季节开花、结果,候鸟在每年的一定时间迁徙,就是生物钟的表现。{biological clock; biochronometer; living clock; periodic rhythm of the life of organisms, which coincides with the natural cycles, as of days, nights and seasons. The blossoming and fruiting of plants and the migration of migratory birds during fixed periods of the year are expressions of the biological clock.} |