Mcls
abbr. megacycles per second 兆周/秒，兆赫
??? 情景例句
No sweat.
小事兒。
Don't be so sure.
話別說得太滿。
Meanwhile, a microphone, which was lowered into the mine two hours ago, has enabled the men to keep in touch with their closest relatives.
與此同時，兩個小時以前放下井去的一只麥克風使井下的人可以與其親屬保持聯系。