Translate `library/stdtypes.po` (multiple translators needed)

There are about 800 untranslated strings in library/stdtypes.po and the translation should be broken into multiple PR (and can be finished by different translators). If anyone is interested in translating certain topic(s), please leave a comment below (instead of opening another issue)!

Here is the list of the sections in library/stdtypes.po (tick boxes indicate if the section is assigned to someone) and the current string count in each section (in the format of (todo/total)).

• 1. intro part (4/5)
• 2. Truth Value Testing (7/7)
• 3. Boolean Operations — and, or, not (9/18)
• 4. Comparisons (17/25)
• 5. Boolean Types
• 6. Numeric Types — int, float, complex (84/124)
• 7. Iterator Types (11/11)
• 8. Sequence Types — list, tuple, range (109/141)
• 9. Text Sequence Type — str (158/194)
• 10. Binary Sequence Types — bytes, bytearray, memoryview (182/185)
• 11. Set Types — set, frozenset (44/44)
• 12. Mapping Types — dict (63/63)
• 13. Context Manager Types (11/11)
• 14. Type Annotation Types — Generic Alias, Union (41/79)
• 15. Other Built-in Types (34/38)
• 16. Special Attributes (15/16)
• 17. Integer string conversion limitation

从 library/stdtypes.po 开始，选择一个尚未勾选的部分，例如 Sequence Types 或 Text Sequence Type。查看周围已翻译的字符串，并在翻译所选条目时保留文档的 PO 格式。完成的标准是所选部分已翻译并作为独立的 pull request 提交，同时为其他翻译者明确分隔剩余工作。