Seismicity
n. 地震活動; 受震強度
??? 情景例句
Shopping vouchers are ofter a good means of attracting customers.
購物優惠券是吸引顧客的好方式。
That's more like it!
這才像話嘛！
the message to its home planet is barely halfway there.
那么這個信號在發回到原來的行星途中剛剛走了一半路程。