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向后翻腾两周 | |
scub. | back double somersaults; double backward somersaults |
半转体 | |
fig.skat. | semi-pivot |
半周 | |
avia. | half-period; pulse |
fig.skat. | half-circle; half circle |
geophys. | half cycle |
oil | alternation |
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back double somersaults; double backward somersaults |
向后翻腾两周 : 5 phrases in 1 subject |
Scuba diving | 5 |