句法成分是（）和（）的组成成分。
参考答案：短语；句法结构
何谓“行针”？并简答行针的基本手法有哪些？辅助手法有哪些？
I am making water means（）.
A.my vessel is leaking
B.my vessel is producing fresh water
C.my vessel is producing sea water
D.sea water is de-salted on board my vessel
