水合与营养
国际文凭组织 · IB Diploma · 体育、运动与健康科学 · HL 知识点 2 1:25 英语旁白 · 英中内嵌字幕
章节
文本转录
These are selected topics, not the whole syllabus, and every example is fictional.
这些是精选主题，不是完整大纲，所有例子都是虚构的。
Sweat loss comes from a full water balance, not from the scale alone.
出汗量来自完整的水平衡，而不只是体重秤。
Enzymes digest large molecules into small soluble ones that can be absorbed.
酶把大分子消化成能被吸收的小分子。
A fictional athlete weighs 60.0 kilograms before an hour of training and 59.6 after: a mass loss of 0.40.
一名虚构运动员训练一小时前体重 60.0 千克，训练后 59.6 千克：体重下降 0.40。
But they also drank 0.50 kilograms and passed 0.10 of urine.
但他还喝了 0.50 千克水，排尿 0.10。
Sweat loss is about 0.40 plus 0.50 minus 0.10: 0.80 kilograms, or 0.80 litres.
出汗量约为 0.40 + 0.50 − 0.10 = 0.80 千克，即 0.80 升。
The mass loss alone underestimates it.
只看体重下降会低估。
Large insoluble food molecules must become small soluble ones before absorption.
大而不溶的食物分子必须变成小而可溶的分子才能被吸收。
Carbohydrases form sugars, proteases form amino acids, and lipases form fatty acids and glycerol.
糖酶生成糖，蛋白酶生成氨基酸，脂肪酶生成脂肪酸和甘油。
Bile is not an enzyme: it emulsifies fat into droplets and helps neutralise stomach acid.
胆汁不是酶：它把脂肪乳化成小滴，并帮助中和胃酸。
Check yourself.
自我检测。
0.3 plus 0.4 minus 0.1 is a sweat loss of 0.6 kilograms.
0.3 + 0.4 − 0.1 = 出汗 0.6 千克。
9 of 36 is 25 percent of this sample, which proves no cause.
36 人中 9 人，即样本的 25%，不能证明因果。