✅ 同义词
🗣️ 情景例句
I feel sick as a dog.
我病得很厉害。
He lacks the necessary experience.
他缺乏必要的经验。
If they knew how difficult it was to drill through the hard rock, they would lose heart.
如果他们知道了钻透那坚硬的岩石有多么困难，他们会丧失信心的。