不连胸骨的
One of the fishing boats sank down astern of us. 有一艘渔船在我们后面沉没了。
The hire purchase company repossessed my car because I fell astern with the payments. 这家分期付款购买公司取回了我的汽车，因为我没能及时付款。
A ship falls astern by the force of a current. 船会受水流的力量而后退。
When the engine failed, we had to drop astern. 当发动机发生故障，我们不得不落在后面。
S: I am operating astern propulsion. 我船正在倒车。
胸骨旁
