1.Local residents reported that the beluga was extremely tame and enjoyed being petted.
tame順從的
The deer never became tame; they would run away if you approached them.
那些鹿一直沒有被馴服:你一靠近,它們就跑開 。
2.There is much speculation online as to where the whale came from.
speculation 推測
There was widespread speculation that she was going to resign.
人們紛紛推測她將辭職 。