true time的用法和樣例：
例句
- A transition is only performed when its associated condition is true.
轉移只在其相關(guān)聯(lián)的條件為真時(shí)才執行。 - Inventors created sundials, which indicate time by the length or direction of the sun's shadow, to track temporal hours during the day.
當時(shí)的發(fā)明家制造了日晷，利用太陽(yáng)陰影的長(cháng)度或角度，來(lái)測量白天真時(shí)的變化。
