1.recover 恢復
He's still recovering from his operation.
手術后,他仍在恢復之中 。
2.fuse融合
The skull bones fuse between the ages of fifteen and twenty-five...
頭骨在 15 至 25 歲之間長合 。
3.embed嵌入
The fossils at Dinosaur Cove are embedded in hard sandstones...
恐龍峽谷中的化石都嵌在堅硬的砂巖中 。
4.innocuous 無害的
Both mushrooms look innocuous but are in fact deadly...
這兩種蘑菇看起來似乎都無害,實際上卻是致命的 。