Doctor explains the Symptoms and Stages of SYPHILIS (STI)
5:00
YouTubeDoctor O'Donovan
Doctor explains the Symptoms and Stages of SYPHILIS (STI)
Dr O'Donovan explains the four stages of Syphilis, including symptoms associated with each stage. The four stages include, Primary, Secondary, Latent and Tertiary Syphilis. What is Syphilis? Syphilis is a sexually transmitted infection (STI) that's treatable with medication. Without treatment, syphilis causes serious health problems. It can ...
已浏览 52.1万 次2023年7月12日
English Grammar Lessons
Basic English Grammar Lessons 101: Rules for Beginners
13:45
Basic English Grammar Lessons 101: Rules for Beginners
YouTubeTakeLessons
已浏览 85.6万 次2019年4月11日
Basic English Grammar Course for Beginners | 37 Lessons | Learn with Esther
5:27:11
Basic English Grammar Course for Beginners | 37 Lessons | Learn with Esther
YouTubeShaw English Online
已浏览 286.8万 次2021年10月20日
Learn ALL 16 TENSES Easily in under 30 Minutes - Present, Past, Future, Conditional
28:32
Learn ALL 16 TENSES Easily in under 30 Minutes - Present, Past, Future, Conditional
YouTubeEnglish with Lucy
已浏览 456.5万 次2022年7月29日
热门视频
STD and STD Symptoms
10:17
STD and STD Symptoms
YouTubePositiveSingles.com
已浏览 84.4万 次2015年4月2日
Sexually Transmitted Diseases (STDs), Causes, Signs and Symptoms, Diagnosis and Treatment.
5:43
Sexually Transmitted Diseases (STDs), Causes, Signs and Symptoms, Diagnosis and Treatment.
YouTubeMedical Centric
已浏览 70.1万 次2021年10月18日
The most common STI in the world - Emma Bryce
4:28
The most common STI in the world - Emma Bryce
YouTubeTED-Ed
已浏览 87万 次2019年7月9日
Common English Grammar Mistakes
7 Most Common English Grammar Mistakes + TEST - Do you make these mistakes?
18:22
7 Most Common English Grammar Mistakes + TEST - Do you make these mistakes?
YouTubeAccurateEnglish
已浏览 348.9万 次2020年5月22日
50 MOST COMMON MISTAKES in English Grammar - Error Identification & Correction
22:50
50 MOST COMMON MISTAKES in English Grammar - Error Identification & Correction
YouTubeLearn English Lab (Free
已浏览 236.5万 次2017年10月13日
15 Most Common English Grammar Mistakes
23:30
15 Most Common English Grammar Mistakes
YouTubePOC English
已浏览 49.3万 次2024年5月7日