Vocabulary Set 4.

1. dual-earner couples
1. 雙薪夫妻
2. mortgage /ˋmɔrgɪdʒ/ (n)
1. 抵押
3. mire /maɪr/ (v)
1. 使陷入泥沼
4. incur /ɪn`kɝ/ (v)
1. to come into or acquire
5. formaldehyde /fɔrˋmældə͵haɪd/ (n)
1. 甲醛
6. ply /plaɪ/
1. a thickness or layer of folded material
2. 夾層; 多層板
7. plywood
1. 夾板; 多層板
8. particleboard
1. 膠粒版
9. symptom/ˋsɪmptəm/ (n)
1. 症狀

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1.