当代的便携电子钟大约有一个扑克牌盒那么大。
The current generation of portable atomic clocks is roughly the size of a pack of playing CARDS.
然后，要给每个钟安上音乐盒。
她丈夫说罐头盒上写着：打开罐头盒并直立于热水中五分钟。
Her husband said the words on the tin were: open tin and stand in hot water for five minutes.
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