Period of storage
[化] 貯存時間
?? 詞語組成解析
period
['p?r??d]
n. 時期;（一段）時間;學時;句號;
adj. 具有某個時代特征的;（關于）過去某一特定歷史時期的;（家具、服飾、建筑等）某一時代的;
peri周圍，靠近+od道路→周期
of
[?v]
prep. 關于;屬于…的;由…制成;
aux. 助動詞 [非標準用語、方言] =have [主用于虛擬語氣];
??? 情景例句
Nope. I am in perfect health.
沒有。我身體好的很。
How many pieces are you going to take?
你要拿幾支？
Now, dressed in a blue uniform and with a rifle over his shoulder, the prisoner marched boldly up and down in front of the camp.
現在他身穿藍軍裝，肩扛步槍，在軍營門前大膽地來回走看。