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- tracks' source derivation 航迹的目标源归属判断
- The news comes from a reliable source. 这消息来自可靠的来源。
- The city has taken the old streetcar tracks up. 这座城市已经把旧的电车轨道拆除了。
- The dog followed the fox's tracks into the woods. 那只狗沿着狐狸的足迹跑进了树林。
- The Congress shall have power to lay and collect taxes on incomes,from whatever source derived,without apportionment among the several States,and without regard to any census or enumeration. 国会有权对任何来源的收入课征所得税，无须在各州按比例进行分配，也无须考虑任何人口普查或人口统计数。
- Our pilotless rocket enters the track of the earth. 我们把一个无人驾驶的火箭送入了地球的轨道里。
- Derivation from a source; origin. 起源从某一源头起始；源头
- The sudden bang froze us in our tracks. 突然砰的一响，顿时把我们惊呆了。
- The Congress shall have power to lay and collect taxes on incomes, from whatever source derived, without apportionment among the several States, and without regard to any census or enumeration. 国会有权对任何来源的收入课征所得税，无须在各州按比例进行分配，也无须考虑任何人口普查或人口统计数。
- This rough track will soon be a metalled road. 这条坑坑洼洼的路不久就要铺上碎石了。
- I'm trying to track down my old Aunt Maud. 我正试图寻找到我那年迈的婶婶莫德。
- It's time we made tracks (for home). 我们该(家)走了。
- The cyclist went at full sail along the track. 自行车手沿着跑道全速前进。
- My wages are the principal source of my income. 薪金是我收入的主要来源。
- Bill has a feeling he is on a fast track. 比尔感觉到他正快速迈向成功。
- The new race track is nearly six miles in extent. 这条新跑道将近六英里长。
- Solar energy is a new kind of source of energy. 太阳能是一种新型能源。
- We followed his tracks in the snow to a hut. 我们沿着他在雪地上留下的足迹走到一间小屋旁。
- The deer stopped dead in her tracks. 这鹿突然就地停住。
- The sun is the ultimate source of energy. 太阳是能量的最基本来源。
