🧩 词语组成解析
n. 提琴头状船首
fern
[fə:n]
n. <植>羊齿植物，蕨类植物;
🗣️ 情景例句
Richard, these are terrific pictures. Richard
这些照片真棒。
I know the boy whose father is a ball player.
我知道那个男孩的父亲是球员。
Yet a great many processes depending on such research are sought for with complete secrecy until the stage at which patents can be taken out.
然而，依赖这种研究的很多工艺程序是在完全保密的情况下进行的，直到可以取得专利权的阶段为止。