Peel a thick-skinned orange and square off the ends with a sharp knife.剥开一只厚皮橙子，用锋利的刀将两端削去使它呈方形。Therefore, TRF 2 may protect chromosome ends by maintaining the correct structure at telomere termini.因此, TRF2可保护染色体末端保持正确的结...
The journey ends in the ancient city of Marrakesh.旅行的终点是马拉喀什古城。He sweeps up and does a few odds and ends.他扫完地，又干了几样杂活儿。He fears inflation will ratchet up as the year ends.他害怕通货膨胀会在年终更加严重。...