常見例句雙語例句Public health researchers first identified the role of nutritional gatekeeper during World War II, when meat shipments to the troops threatened to create a protein crisis at home.在第二次世界大戰(zhàn)期間,公共衛(wèi)生研究人員首先確定了“營養(yǎng)守護者”的角色,那時,由于肉類食品大多被海運至軍隊導致了家庭日常飲食嚴重缺乏蛋白質。 返回 gatekeeper protein