正在确认阅读权限…
How Do Vaccines Help Your Body Fight Diseases?
疫苗是如何帮助身体抵抗疾病的？
精读先不看文字，完整听一遍。
-
Vaccines contain weakened or inactive parts of a virus or bacteria.疫苗含有病毒或细菌的弱化或灭活成分。
-
When injected, they safely train your immune system to recognize real threats.注射后，它们能安全地训练你的免疫系统识别真正的威胁。
-
White blood cells learn to make special proteins called antibodies against the invader.白细胞学会制造针对入侵者的特殊蛋白质——抗体。
-
If the real disease enters your body later, your immune system responds much faster.若日后真正的疾病侵入体内，免疫系统会更快做出反应。
-
This rapid response often stops illness before symptoms even begin.这种快速反应常在症状出现前就阻止了疾病发生。
-
Some vaccines require multiple doses to build strong, lasting protection.有些疫苗需接种多剂才能建立强效且持久的保护。
-
Herd immunity occurs when enough people are vaccinated to block disease spread.当足够多的人接种疫苗从而阻断疾病传播时，便形成群体免疫。
-
Vaccines have helped eliminate deadly illnesses like smallpox worldwide.疫苗已帮助在全球范围内消灭了天花等致命疾病。
-
Scientists continuously update flu vaccines because flu viruses change every year.科学家每年都会更新流感疫苗，因为流感病毒每年都在变异。
-
Side effects are usually mild, such as soreness or a low fever for one or two days.副作用通常很轻微，例如注射部位酸痛或一两天低烧。
精读 · 大约 10 分钟
听 → 读 → 学表达 → 懂 → 今天会说这一句 → 跟读录音 → 自己说一句。
③ 学 · 重点表达
- Vaccines have helped eliminate deadly illnesses like smallpox worldwide. 疫苗已帮助在全球范围内消灭了天花等致命疾病。
- This rapid response often stops illness before symptoms even begin. 这种快速反应常在症状出现前就阻止了疾病发生。
- Some vaccines require multiple doses to build strong, lasting protection. 有些疫苗需接种多剂才能建立强效且持久的保护。
④ 懂 · 选一选
⑤ 今天会说这一句
Vaccines have helped eliminate deadly illnesses like smallpox worldwide.
⑥ 跟读并录音
Vaccines have helped eliminate deadly illnesses like smallpox worldwide.
第一版：录下来、回听、再听标准音。系统打分以后再加。
⑦ 说 · 自己来一句
用今天的表达，自己说一句。
例子：Vaccines have helped eliminate deadly illnesses like smallpox worldwide.
已记下。连续天数以后会显示在课表里。
陈老师指导
课程开发中，敬请期待。成人和孩子都可以先自学听读、精读。
这边的讲解音轨还在做。想先跟着老师走完固定 30 课，可以去陈老师带读社（和自学通行不是同一份会员）。
课程开发中，敬请期待。