| 例句 |
developmentaladjective made or done as an experimentdevelopmental weaponry that is classified as top secret by the Pentagon experimental, pilot, trial exploratory, investigative, probativepreliminary, preparatory, provisional, temporary, tentativeconjectural, hypothetical, speculative, theoretical(also theoretic)untested, untriedunproved, unproven accepted, established, standardtested, triedadvanced, developedproved, provenconclusive, decisive, definitive, final, permanent in 1849 |