1.A towhead is a sandbar that has cottonwoods on it as thick as harrow-teeth.

1.沙洲是一片沙，上面长满了白杨，密象耙齿一般。

2.As soon as I got started I took out after the raft, hot and heavy, right down the towhead.

2.船一开，顺着沙洲，朝着木筏，拼命追去。