“他们回复说，因为装运要经过新加坡，现在正在等待新加坡是否接受干电池”用英语怎么说

It was replied that they were waiting to make sure if Singapore would like to accept dry battery, because the shipping would pass through Singapore.

In their reply, it was said that they are waiting for the acceptance of dry cells by Singapore, where the shipping would pass through.

They replied they are waiting to see if dry battery is allowed to enter Singpore. Because the goods will be via the country.

where the shipping would pass through

They replied that they're waiting for the approvement from Singapore to accept the dry battery due to the shipping routing is VIA Singapore.