Acid can eat into metals.
酸可以侵蝕金屬。
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Our apps:
Lite version
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| Lite version |
Full version
 |
| Full version |
We are a group of programmers and teachers. We would like to develop apps to help students learn English easily and interactively.
We are a group of programmers and teachers. We would like to develop apps to help students learn English easily and interactively.
|
| Lite version |
|
| Full version |
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