Most people don't tan after just one day at the beach, or one session in the tanning bed, because it takes time to make melanin.

大多数人只在沙滩上玩一天或者使用晒黑床一段时间不会被晒成古铜色的皮肤，因为黑色素的合成是需要时间的。

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Or you can have a pebble bed reactor which is a continuous flow of pebbles that go in and out of the reactor over time to make up the excess activity.

或者，你们能有一个球床实验反应堆，那是有球体不断的出入，反应堆，随着时间，用来补充剩余反应性。

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Each time you make a deposit into your savings account (or each time you shove a few into the jam jar hidden under your bed), write down the date and how much you saved.

每次，你往账户里存钱(或往藏在床下的果酱罐里放多少美元)请记下日期和数目。

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But until the dust settles downtown, when it comes time to make deals, do lunch (or dinner) and bed down for the night, business travellers will likely head to stylish west side haunts in Beverly Hills, Century City, Santa Monica and West Hollywood.

BBC: Business trip: Los Angeles

The mattress inside would also be specially designed to prevent bed sores and make it more comfortable for the baby who spends most of its time in there.

BBC: Baby in an incubator