sand clock
英
美
- 沙漏
双语例句
- Once the grains of sand have fallen through the mitotic hourglass, there's no point in turning it over again.
一旦有丝分裂沙漏里的最后一粒沙落下之后，重头再来一遍也就没什麽意义了。 - Nothing you or I could do would make more than one grain of sand pass through this narrow neck without impairing the hourglass.
在不损坏沙漏的情况下，不管我们怎么做，都不能让两粒沙子同时通过狭窄的瓶颈。
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