词根词缀：a-, ab-, abs-

【来源及含义】Latin: prefix; from, away, away from

【相关描述】This prefix is normally used with elements of Latin and French origins (abs- usually joins elements beginning with c, q, or t).

The form ab- is regularly used before all vowels and h; and it becomes a- before the consonants m, p, and v. The prefix apo- has similar meanings.

This list is a very small sample of the multitudes of a-, ab-, abs- prefixes that are available in dictionaries and those in this unit are only meant to present a few examples.

【同源单词】abampere, abampere centimeter squared, abampere per square centimeter, abarticular, abarticulation, abbreviate

词根词缀：duc-, -duce, -duct, -ducent, -ductor, -duction, -ductive, -ducer, -ducement, -ducation

【来源及含义】Latin: to lead, leading; bringing; to take; to draw along or out

【相关词根词缀】 Cross references of word families related to "bear, carry, bring": -fer; ger-; later-, -lation; phoro-; port-. A cross reference of word units that are related, directly and/or indirectly, with "tube, pipe": aulo-; can-, cann-; fistul-; siphon-; syringo-; tub-.

【同源单词】abduce, abducens, abducent, abducent, abduct, abductee