Ophitron
小型微波发生器, 微波振荡管
🗣️ 情景例句
about five years ago.
大约五年前。
He who hath good health is young, and he is rich who owes nothing.
健康葆青春，无债即富有。
and it spread to Britain where wild rabbits are regarded as a pest but where domesticated rabbits,equally susceptible to the disease, are the basis of a profitable fur industry.
这种疾病又蔓延到了英国。在英国，野兔被当作有害的动物，可是家兔是赚钱的毛皮工业的基础，然而家兔同样易感染这种疾病。