零加任一数仍等于该数，零乘任一数则等于零。
Zero plus any number gives that number again, and zero times any number gives zero.
莫里森公司已经委任加拿大最大零售企业罗布劳公司的首席运营官做新一任英国第四大连锁超市的首席执行官。
Morrisons has appointed the chief operating officer of Canada's largest retailer, Loblaw, as the new chief executive of Britain's fourth-largest supermarket chain.
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