Photoperiod
n. 光周期
??? 情景例句
We were exposed to the latest theories on child care.
我們接觸過有關幻兒保育的最新理論。
If you adhere to the route on the map, you won't get lost.
如果你完全按照地圖上的路線走，你就不會迷路。
Twelve days later, millions more Indians lined the railway tracks as a slow train took the jar containing his ashes 584 kilometres to a place by the river.
12天后，當一列慢車將盛有甘地骨灰的壇子駛向584公里外，靠近恒河的一個地方時，又有數百萬人排列的鐵路兩旁，夾道送行。