計(jì)時(shí)器

One day he asks you to prepare breakfast for him, and the only timepieces in the house are two hourglasses. 一天，他讓你為他準(zhǔn)備早飯，而家里能找到的計(jì)時(shí)器只有兩個(gè)沙漏。

The development of mechanical timepieces witnessed the search for more accurate sundials with which the timepieces could be regulated. 由于機(jī)械計(jì)時(shí)器的發(fā)展，人們開始尋求更精確的日晷，以便校準(zhǔn)機(jī)械計(jì)時(shí)器。