The RDA for protein is set at 0.8 grams of protein per kilogram of body weight.

蛋白质的 RDA（建议每日摄取量）设定为每公斤体重 0.8 克蛋白质。

Generally, that would be about 1.6 grams of protein per kilogram of body weight per day starting out.

一般来说，一开始每公斤体重可以摄入 1.6 克蛋白质。

Right now, the US Food and Drug Administration sets the safe level for BPA exposure at half a microgram per kilogram of body weight per day.

目前，美国食品和药物管理局将 BPA 暴露的安全水平设定为每天每公斤体重半微克。

A common recommendation is to consume around 1.6 to 2.2 grams of protein per kilogram of body weight per day, which should account for about 25 to 40% of your total calorie intake.

一个常见的建议是，每人每天应摄入每公斤体重 1.6 到 2.2 克蛋白质，应该占你总卡路里摄入量的 25% 到 40% 左右。