關於達美航空托運問題

我3月7號會去東京
買了達美航空的機票
請問我是否可帶自行車出國?
在20公斤以下
他官網寫的有點看不懂
Update: Non-motorized touring or racing bicycles with single seats are accepted as checked baggage on most flights with the exception of some Delta Connection® carriers and aircraft that may not accept bicycles as checked baggage
Update 2: , and may have different limits due to cargo constraints. Linear dimensions must not exceed 115 linear inches (292 cm); no oversized fees apply. Bicycles weighing over 70 lbs will be charged the applicable 超重行李費; bicycles weighing over 100 lbs will not be accepted.
Update 3: http://zt.delta.com/traveling_checkin/ba...
這是他們的官方網站
意思是說我托運單車不用加運費囉?
Update 4: 所以他要加運費?真貴= =
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