F region
【气象学】F区,F(电离)层(＝F layer)
🧩 词语组成解析
🗣️ 情景例句
we're not sure
我们还不能肯定
Business may be troublesome, but idleness is pernicious.
事业虽扰烦，懒惰更害人。
An all-night party on New Year's Eve provided me with a good excuse for not carrying out either of these new resolutions on the first day of the year,
新年除夕举办的一次通宵晚会，使我理直气壮地在新年头一天免去了这两项任务。