Erethizontidae
美洲豪猪科
🗣️ 情景例句
A couple of weeks.
两、三个星期吧。
Would you care to take a seat while I make out a receipt?
请坐一会儿好吗？我给您开个收据。
it takes much less energy to accelerate to that 1.5 miles per second than it does on Earth.
在月球上加速到每秒1。5英里比在地球上所用能源要少得多。