defence：防御，防卫，保卫；辩护，答辩；(复数)防御工事

词根词缀：de-离开 + -fenc-打击 + -e

• semi-
• semibreve
• semicircle
• semicolon
• semiconductor
• semidome
• semiliterate
• semilunar
• seminal
• seminar
• seminary
• semination
• semiotic
• semiotics
• semiquaver
• Semite
• semivowel
• semolina
• sem-,seman-
• sen-
• senate
• senator
• send
• senescence
• senescent