2. The point used by Clovis people differs slightly from later points, in the way that the base of the stone is thinned—it's thinner toward the base, the part that's attached to the spear. 克洛维斯人使用的矛头和后期的矛头有些不同,克洛维斯矛头的石基座是薄的,即越接近基座(接在矛上的一端)越薄。
3. The clouds thinned and the moon shone through. 云层渐稀,透出了月光。
4. The crowd had thinned out and only a few people were left. 人群渐渐散去,只剩下几个人。
5. It would have been better to have thinned the trees over several winters rather than all at one time. 当初要是分几个冬天来疏剪树木,会比一次性疏剪要更好些。