Enzyme-trace-substance theory
[医] 酶微量物质学说
🧩 词语组成解析
trace
[tres]
vt. 跟踪，追踪;追溯，探索;探索;查找;
vi. 沿着一小径或道路前进;可以追溯的;
n. 痕迹，踪迹;微量，极少量;[植]（脉）迹;痕迹;
trace(draw)→回溯
🗣️ 情景例句
Someone just checked out.
有一个人刚刚结帐走了。
Forget it!
算了！
Suddenly a raft appeared, looking rather like Noah's ark, carrying the whole family, a few hens, the dogs, cat, and bird in a cage.
突然，出现了一只筏子，看起来很像诺亚方舟，上面载着他们全家老小，还有几只母鸡、几只狗，一只猫与一只鸟笼，那里头有一只小鸟。