通常情况下, 卖方有义务预付海运费.用英语怎么说？

通常情况下, 卖方有义务预付海运费.

Normally, the seller is obligated to prepay the ocean freight.

normally

adv. 正常地，通常地，一般地，按说，论理；

例句
They don't normally give any advance notice about which building they're going to inspect...
他们一般不会预先通知检查哪座大楼。

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

seller

n. 卖者，卖方，销售者，销售商，销售物；

例句
...Kraft, the largest seller of cheese in the United States.
卡夫公司，美国最大的奶酪销售商

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

obligated

adj. 有义务的，必须的，有责任的；v. 使负有责任或义务（ obligate的过去式和过去分词 ）；

例句
Under a separation agreement, he was obligated to pay his ex-wife £50,000 a year for life.
根据分居协议，他必须每年向前妻支付5万英镑。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

prepay

vt. 预付，先付，预付（邮资等）；

例句
Normally, the seller is obligated to prepay the ocean freight.
通常情况下, 卖方有义务预付海运费.

ocean

n. 洋，海洋，大海，（地球上划分出的）洋；

例句
I did once dream of becoming the first woman to captain an ocean liner.
我确实曾经梦想过成为首位远洋客轮的女船长。

freight

n. 货运，货物，运费，船运货物，货运列车；vt. 运输，装货于；

例句
On the customs declaration, the sender labeled the freight as agricultural machinery...
在报关单上，寄货人将货物列为农用机械。