in the mid-60s什么意思

temperatures in the mid-to high 20's什么意思 "in the mid-twentieth century"什么意思? in the mid-1990s 和 by the mid-1990s有什么区别? in the mid 1810's怎么翻译 英语高手请进：In the mid 1970s,那个S的意思? ”highs should be in the mid-80s to low 90“的意思 英语翻译Highs in the upper 50s 这是说高温 最高温度50度的意思?Lows in the mid 英语翻译RT还有：popular since the mid 70sintroduces in the mid 80s in the mid-dell mid什么意思 She's in her mid love's in the air 什么意思