词根词缀：jet-, -ject, -jecting, -jected, -jection, -jector, -jectory; jacu-, jac-

【来源及含义】Latin: throw, send, fling, hurl, cast; gush; spurt

【同源单词】abject, abjection, abjectly, abjectness, adjectival, adjectival

词根词缀：opaqu-

【来源及含义】Latin: not transparent nor translucent, not clear, unable to shine through; shaded, shady; dark; no luster; not clearly understood or expressed

【同源单词】electron opaque tracer, Isopaque, nonopaque, opacity, opaque projector, opaque