1. You must look that no one lags behind.
   你必须注意不使一个人掉队。
2. There is a time lag of about fifteen years.
   时间上有一段约15年的间隔。
3. I staved off jet lag with a bath and an early night.
   我洗了个澡又提前睡下，免除飞行时差的反应。
4. Let not a single classmate lag behind.
   不要让一个同学掉队。
5. "Modesty helps one to go forward, whereas conceit makes one lag behind."
   "虚心使人进步,骄傲使人落后。"
6. As conceit makes one lag behind,so modesty helps one make progress.
   骄傲使人落后,谦虚使人进步。
7. Why is this country lagging behind in the development of space technology?
   这个国家为什么在航天技术的发展方面落在人家后面?
8. We are lagging far behind our European competitors in using new technology.
   我们在使用新技术方面远远落后于我们的欧洲对手。
9. If your payments of rent lag behind, you will be asked to leave.
   如果你不如期交房租, 你就会被赶走。
10. Why does she always lag behind others when we're out for a walk?
    为什么外出散步时, 她总落在后面?
11. The elder people and children always lag behind when we go for a walk.
    "我们出门散步时,年纪大的人和孩子们总是落在后头。"
12. Britain's economic development must lag behind that of almost every other industrial nation.
    英国的经济发展肯定落后于几乎所有的其他工业国。
13. The lame child lagged behind.
    那个跛脚的小孩落在后面了。
14. But they gradually lag behind others, and become common, negative without vitalization when they step into society.
    但出社会之后，渐渐落后，乃至变得平庸、消极、没有生气。
15. Abducens neurons in the lagging group but not those in the leading group were activated by antidromic stimulation of the contralateral oculomotor nucleus.
    外展神经元的滞后组而不是引导组被对侧动眼神经核的逆向刺激驱动。
16. The fact remains that we are still lagging behind the other classes in maths.
    事实是我们在数学方面仍然比别的班落后。
17. The Coal Measures Strata are divided into 1 super-sequence and 3 sequences on the basis of paleostructure surface,widespread overlap unconformability,coal seam,and channel lag deposit.
    根据古构造运动面、大面积超覆界面、煤层和河床滞留沉积将含煤岩系划分为1个超层序和3个层序。
18. Hoverer. it means that there are some factors that affect the lag in education generally and more so the female side.Among the factors is school dropout.
    这意味着存在一些因素阻碍了女童的受教育进程，其中辍学是极为重要的一个因素。
19. Due to the lagged manufacturing technology, lower efficiency and unbefitting consumption pattern, etc, there is a big challenge of energy-environmental sustainable development in the cities in China.
    由于上游产品工艺相对落后、加工效率较低、下游消费格局有待改善等原因，使得当前中国城市发展中的能源环境的可持续性面临巨大挑战。

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