1. They have a pretty little triangular garden.
    他们有个漂亮的三角形小花园。

2. On this second leg of the triangular trade, the ship went southward across the Bay of Biscay, down past the Canaries, into the mouth of the Gambia River.
    在这三角贸易的第二段航程中，该船向南航行穿过了比斯开湾，南下途经加那利群岛，驶入了冈比亚河的河口。