例句與造句

1. A majority of idiopathic varicoceles occur on the left side, because the left testicular vein travels superiorly and connects to the left renal vein ( at a 90-degree angle ), while the right testicular vein drains directly into the inferior vena cava.
2. It's difficult to find left testicular vein in a sentence. 用left testicular vein造句挺難的