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20
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Obama
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02:54
How Much Power Does the UN Actually Have?
245
B2 High-Intermediate
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02:41
Can Certain Foods Cause Nightmares?
440
B1 Intermediate
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03:58
What Powers Does President Obama Legally Have?
155
B1 Intermediate
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02:36
Does Recycling Actually Help?
684
B1 Intermediate
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02:46
Why Low Gas Prices Are Bad For The World
2194
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02:11
Why gas prices are so low right now
684
A2 Basic
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03:12
How Powerful Is France?
211
B1 Intermediate
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02:27
Overview of PCR Cloning
66
B2 High-Intermediate
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02:10
Polymerase Chain Reaction (PCR)
77
B2 High-Intermediate
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02:46
Overview of Traditional Cloning
28
B2 High-Intermediate
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01:48
Cloning With Restriction Enzymes
42
B2 High-Intermediate
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07:20
Key Steps of Molecular Cloning
111
B2 High-Intermediate
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Cheng-Hong Liu
100000206381273
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Hello~我是Cheng-Hong Liu!
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4490
Cheng-Hong Liu Collection
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