次生菌丝体（secondary mycelium）

次生起源中心（secondary origin center）

The machine he originated and perfected has no modern _____ or ancient prototype.

（）doesn’t need to change package of goods or to stop in any place between the origin and destination

（）doesn’t need to change package of goods or to stop in any place between the origin and the destination point.

栽培作物起源于（），研究作物起源的实质目的是为了寻找植物资源，建立（）。

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

During counterflooding to correct a severe list or trim aggravated by an off-center load，a ship suddenly takes a list or trim to the opposite side. You should（）.

简述烟草栽培面向21世纪发展对策

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。