cover a year是什么意思 cover a year怎么读
cover a year的用法和样例
- In a year,your share of the solid waste amounts to nearly one metric ton.
一年内你所丢弃的那份固体废料几乎达一公吨。 - It then took up to 7 a year for the piglet cells to mature and start producing full quantities of insulin.
这些小猪细胞此后需要多达一年的时间发育成熟，并开始产生足量的胰岛素。 - The construction of this canal took one year.
这条运河历时一年才修建成功。 - This company spent a year developing this card punching system buses.
这家公司历时一年才开发出这套公共车刷卡系统。
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