The drainage system has been aged indicates the drainage system is old.
排水系统已经老化了表示排水系统很旧了。
| Expression | 排水系统已经老化了。 |
|---|---|
| Meaning | The drainage system has been aged. |
| Reading | páishuǐ xìtǒng yǐjīng lǎohuà le |
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