令我印象深刻的是他对目标的坚定不移。What'simpressed me has been his considerable firmness of purpose.他肌肉发达，但是太胖了，没给人留下好印象。He was well-built, but too fleshy to be impressive.在我对学校午餐的回忆中，印象最深刻的就是蔬菜总是炒过头。Overcooked greens are my most vi...
The nature of the polymer is currently a trade secret.这一聚合物的性质目前是个商业机密。He's accused of misusing $17.5 million from a secret government slush fund.他被指控滥用秘密的政府行贿基金，金额达1,750万美元。The exact locations are being kept secret...
The apple is taken away after their seed is no longer extractable.当再也榨不出子来时,苹果就被拿走了.The gold in the oceans is too diffuse to be extractable at a profit.但海洋中的黄金太分散,提炼赚不了钱....