Anniversaries
n. 周年紀(jì)念（日）（anniversary的復(fù)數(shù)）
??? 情景例句
I'll take it. But the price is a bit high. How about free wrapping?
我買了。但價(jià)格有點(diǎn)高，免費(fèi)包裝怎么樣？
Not let the grass grow under one's feet.
不失時(shí)機(jī)。
The second marks the arrival of transverse vibrations which travel more slowly and arrive several minutes after the first.
然后記錄下的是橫向波的到達(dá)，橫向波比縱向波傳播得慢，在縱向波到達(dá)幾分鐘后才能到達(dá)。